0001628280-22-002416 | 10-K | XBRL Viewer

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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Recent Accounting Pronouncements	12 Months Ended
Recent Accounting Pronouncements	Dec. 31, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recent Accounting Pronouncements	Note 4: Recent Accounting Pronouncements Pending Adoption: ASU 2021-10 - Government Assistance (Topic 832) - Disclosures by Business Entities about Government Assistance ("ASU 2021-10") In November 2021, the FASB issued ASU 2021-10, which is aimed at increasing transparency about certain government assistance received by a business entity. The standard requires business entities to make annual disclosures about the nature of the transactions and the related accounting policy used to account for the transactions, the line items and applicable amounts on the balance sheet and income statement that are affected by the transactions, and significant terms and conditions of the transactions, including commitments and contingencies. If an entity omits any required disclosures because it is legally prohibited, it must disclose that fact. ASU 2021-10 is effective for financial statements issued for annual periods beginning after December 15, 2021. The Company expects the standard to be applicable to its financial statements and is currently evaluating and understanding the requirements for drafting applicable disclosures. ASU 2020-06 - Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity ("ASU 2020-06") In August 2020, the FASB issued ASU 2020-06, which simplifies the guidance on the issuer’s accounting for convertible debt instruments by removing the separation models for (1) convertible debt with a cash conversion feature and (2) convertible instruments with a beneficial conversion feature. Entities will not separately present in equity an embedded conversion feature in such debt and will account for a convertible debt instrument wholly as debt, unless certain other conditions are met. Also, ASU 2020-06 requires the application of the if-converted method for the purpose of calculating diluted earnings per share and the treasury stock method will be no longer available. As required, the Company plans to adopt ASU 2020-06 for fiscal 2022 using a modified retrospective approach and expects to record a cumulative effect adjustment of an estimated $66 million to increase opening retained earnings as of January 1, 2022. Due to the adoption of ASU 2020-06, the Company expects interest expense for fiscal 2022 will be lower than for fiscal 2021 by approximately $27 million. At an average stock price of $55, the Company expects an increase of 2.8 million for fiscal 2022 compared to fiscal 2021 in dilutive shares included in diluted weighted-average shares of common stock outstanding for the purpose of calculating diluted earnings per share. These estimates are based on the balance of 1.625% Notes and 0% Notes outstanding as of December 31, 2021.

The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.

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Business Combination and Asset Acquisition [Abstract]

Acquisitions and Divestitures

12 Months Ended

Dec. 31, 2021

Acquisitions and Divestitures

Note 5: Acquisitions and Divestitures

The Company pursues acquisitions and divestitures from time to time to leverage its existing capabilities and further expand its business to achieve certain strategic goals. Acquisition costs are not included as components of consideration transferred and instead are accounted for as expenses in the period in which the costs are incurred. During the years ended December 31, 2021, 2020 and 2019, the Company incurred acquisition and divestiture related costs of approximately of $11.9 million, $1.0 million and $11.3 million, respectively, which are included in operating expenses in the Company's Consolidated Statements of Operations and Comprehensive Income. Following are the acquisitions and divestitures during 2021, 2020 and 2019.

2021 Acquisition and Divestiture

GTAT Acquisition

On October 28, 2021, the Company acquired all of outstanding equity interests of GTAT. The Company believes the acquisition of GTAT will act as a building block to fuel growth and accelerate innovation in disruptive intelligent power technologies and secure supply of SiC to meet growing customer demand for SiC-based solutions in the sustainable ecosystem.

Pursuant to the terms and subject to the conditions set forth in the Agreement and Plan of Merger, the purchase price totaled $434.9 million. Cash consideration amounted to $424.6 million, of which $17.0 million was deposited for general representation and warranty purposes in an escrow account, legally owned by the Company. The remaining consideration of approximately $10.0 million represented the value of certain pre-acquisition deposits and payable balances effectively settled between the parties since the Company was GTAT's customer. From the closing date of the acquisition through December 31, 2021, the Company recognized immaterial revenue and net loss relating to GTAT.

The preliminary allocation of the purchase price of GTAT to the assets acquired and liabilities assumed based on their relative fair values is as follows (in millions):


	Purchase Price Allocation
Cash and cash equivalents	$	8.2

Inventory and other current assets	10.0

Property, plant and equipment	31.9
Goodwill	274.8
Intangible assets - Developed Technology	130.0

Deferred tax assets	13.4
Other non-current assets	7.4
Total assets acquired	475.7

Current liabilities	5.8



Other long-term liabilities	35.0
Total liabilities assumed	40.8
Net assets acquired/purchase price	$	434.9

Developed technology of $130.0 million, determined using the income approach is estimated to have an useful life of 13 years. There were no IPRD intangible assets identified. The acquisition produced $274.8 million of goodwill, which has been assigned to a reporting unit within PSG. Goodwill is attributable to the expected value generation by GTAT by being part of the Company along with a more meaningful engagement by the customers due to the scale of the combined entities, GTAT's assembled workforce, other product and operating synergies. Goodwill arising from the GTAT acquisition is not deductible for tax purposes.

The purchase price allocation is considered preliminary as the Company finalizes its determination relating to the valuation of assets and liabilities and finalizes key assumptions, approaches and judgements with respect to intangible assets acquired from GTAT and the related tax effects.

GTAT Pro-Forma Results of Operations

The following unaudited pro-forma consolidated results of operations for the years ended December 31, 2021 and December 31, 2020 have been prepared as if the acquisition of GTAT had occurred on January 1, 2020 and includes adjustments for the effect of fair value changes, transaction costs, taxation and financial structure (in millions):



	Year Ended
	December 31, 2021		December 31, 2020
Revenue	$	6,750.4	$	5,262.5
Net income	972.4		210.3
Net income attributable to ON Semiconductor Corporation	970.8		208.1

Divestiture

On October 1, 2021, the Company divested itself of one of its businesses along with the related intellectual property for aggregate consideration of approximately $13.6 million and recognized a gain of $10.2 million after offsetting the carrying values of the disposed assets and liabilities.

Pending Acquisition, announced in 2019

During 2019 and 2020, the Company entered into an APA and an APA Amendment, respectively, to acquire GFUS's East Fishkill, New York site and fabrication facilities and certain other assets and liabilities on or around December 31, 2022 for an aggregate purchase price of $400.0 million in cash, subject to adjustments as described in the APA and APA amendment (the "Total Consideration"). In connection with the APA Amendment, the Company also entered into an amendment to an ancillary agreement relating to the provision of foundry services entered into in connection with the execution of the APA, which provided the Company certain additional tools and flexibility in its capital expenditures and manufacturing plans for 2021 and 2022.

The Company made payments of $100.0 million and $70.0 million during 2020 and 2019, respectively, of the Total Consideration in cash as a non-refundable deposit, which will be applied toward and reduce the Total Consideration. These amounts are recorded as other assets in the Consolidated Balance Sheets. Additionally, Company paid GFUS a license fee of $30.0 million in cash for certain technology during 2019, which has been recognized as an intangible asset subject to amortization.

Quantenna Acquisition during 2019

On June 19, 2019, the Company acquired 100% of the outstanding shares of Quantenna, a global leader and innovator of high performance Wi-Fi solutions, whereby Quantenna became a wholly-owned subsidiary of the Company. Following the acquisition, Quantenna changed its name to ON Semiconductor Connectivity Solutions, Inc. The purchase price consideration for the acquisition totaled $1,039.3 million, and was funded by a combination of a draw of $900.0 million against the Revolving Credit Facility and cash on hand. The operations of Quantenna have since been integrated with that of the Company.

The following table presents the allocation of the purchase price of Quantenna for the assets acquired and liabilities assumed based on their relative fair values (in millions):


	Purchase Price Allocation
Cash and cash equivalents	$	133.4
Receivables	22.2
Inventories	41.8
Other current assets	4.3
Property, plant and equipment	16.9
Goodwill	726.7
Intangible assets (excluding IPRD)	87.1
IPRD	23.8
Deferred tax assets	29.2
Other non-current assets	12.7
Total assets acquired	1,098.1
Accounts payable	22.6
Other current liabilities	17.5
Deferred tax liabilities	3.3
Other non-current liabilities	15.4
Total liabilities assumed	58.8
Net assets acquired/purchase price	$	1,039.3

Acquired intangible assets of $110.9 million include developed technology of $58.3 million (which are estimated to have a useful life of eight years). The value assigned to developed technology was determined using the income approach. The total weighted average amortization period for the acquired intangibles is eight years.

IPRD assets are amortized over the estimated useful life of the assets upon successful completion of the related projects. The value assigned to IPRD was determined by estimating the net cash flows from the projects when completed and discounting the net cash flows to their present value using a discount rate of approximately 12.0%. The cash flows from IPRD’s significant products commenced from 2020 onwards.

The acquisition produced $726.7 million of goodwill, which was assigned to a reporting unit within ASG. The goodwill is attributable to a combination of Quantenna's assembled workforce, expectations regarding a more meaningful engagement by the customers due to the scale of the combined company and other product and operating synergies. Goodwill arising from the Quantenna acquisition is not deductible for tax purposes.

Quantenna Pro-Forma Results of Operations

Unaudited pro-forma consolidated results of operations for the years ended December 31, 2021 and 2020 are not required because the results of the acquired business are included in the Company's results. The following unaudited pro-forma consolidated results of operations for the years ended December 31, 2019 has been prepared as if the acquisition of Quantenna had occurred on January 1, 2018 and includes adjustments for amortization of intangibles, interest expense from financing, restructuring, and the effect of purchase accounting adjustments including the step-up of inventory (in millions):


	Year Ended
	December 31, 2019
Revenue	$	5,613.2
Net income	218.2
Net income attributable to ON Semiconductor Corporation	216.0

Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Note 6: Goodwill and Intangible Assets

Goodwill

Goodwill is tested for impairment at the reporting unit level, which is one level below the Company's operating segments. The Company performed its impairment assessment and concluded that the fair value of reporting units exceed their carrying value as of the impairment test date. As the Company continues to implement its business strategy to rationalize products and manufacturing locations to transition to a lighter internal fabrication model, there could be divestiture transactions resulting in a portion of goodwill or other assets being de-recognized, and which may or may not result in accounting charges.

The following table summarizes goodwill by operating and reportable segments (in millions):


	As of December 31, 2021				As of December 31, 2020						As of December 31, 2019
	Goodwill		Accumulated Impairment Losses		Carrying Value		Goodwill		Accumulated Impairment Losses			Carrying Value		Goodwill		Accumulated Impairment Losses		Carrying Value
Operating and Reportable Segments:
ASG	$	1,566.3	$	(418.9)	$	1,147.4	$	1,566.3	$	(418.9)		$	1,147.4	$	1,563.4	$	(418.9)	$	1,144.5
ISG	114.0		—		114.0		114.7		—			114.7		114.4		—		114.4
PSG	708.0		(31.9)		676.1		433.2		(31.9)			401.3		432.2		(31.9)		400.3
Total	$	2,388.3	$	(450.8)	$	1,937.5	$	2,114.2	$	(450.8)		$	1,663.4	$	2,110.0	$	(450.8)	$	1,659.2

The following table summarizes the change in goodwill (in millions):


Net balance as of December 31, 2019	$	1,659.2
Addition due to business combination	4.2

Net balance as of December 31, 2020	1,663.4
Addition due to business combination	274.8
Divestiture of a business	(0.7)
Net balance as of December 31, 2021	$	1,937.5

Intangible Assets

Intangible assets subject to amortization, net, were as follows (in millions):


	As of December 31, 2021
	Original Cost		Accumulated Amortization		Accumulated Impairment Losses		Carrying Value

Customer relationships	$	581.5	$	(436.3)	$	(17.6)	$	127.6

Developed technology	928.1		(600.5)		(2.6)		325.0




Licenses	30.0		(0.3)		—		29.7
Other intangibles	79.1		(62.1)		(15.2)		1.8
Total intangible assets	$	1,618.7	$	(1,099.2)	$	(35.4)	$	484.1


	As of December 31, 2020
	Original Cost		Accumulated Amortization		Accumulated Impairment Losses		Carrying Value

Customer relationships	$	581.5	$	(411.7)	$	(17.6)	$	152.2

Developed technology	794.7		(532.9)		(2.6)		259.2




Licenses	30.0		—		—		30.0
Other intangibles	79.3		(60.6)		(15.2)		3.5
Total intangible assets	$	1,485.5	$	(1,005.2)	$	(35.4)	$	444.9

Not included in the above table are the value of IPRD projects amounting to $11.6 million and $24.1 million as of December 31, 2021 and December 31, 2020, respectively. During the years ended December 31, 2021 and December 31, 2020, certain of the IPRD projects were completed resulting in the reclassification of $9.6 million and $15.2 million, respectively, to developed technology. The Company impaired one of the projects valued at $2.9 million during the year ended December 31, 2021.

Amortization expense for the intangible assets is expected to be as follows over the next five years, and thereafter (in millions):



2022	$	85.3
2023	69.2
2024	67.5
2025	55.8
2026	47.7
Thereafter	158.6
Total estimated amortization expense	$	484.1

Restructuring, Asset Impairments and Other Charges, net

12 Months Ended

Dec. 31, 2021

Restructuring Charges [Abstract]

Restructuring, Asset Impairments and Other, net

Note 7: Restructuring, Asset Impairments and Other Charges, net

Details of restructuring, asset impairments and other charges, net are as follows (in millions):


	Restructuring		Asset Impairments (1)		Other		Total
Year Ended December 31, 2021
2021 Involuntary separation program	65.3		—		—		65.3

Other	2.2		3.3		0.6		6.1
Total	$	67.5	$	3.3	$	0.6	$	71.4
Year Ended December 31, 2020
Voluntary separation program	$	27.5	$	—	$	—	$	27.5
2020 Involuntary separation program	11.8		—		—		11.8
General workforce reduction	12.3		—		—		12.3
Other	—		17.5		(3.9)		13.6
Total	$	51.6	$	17.5	$	(3.9)	$	65.2
Year Ended December 31, 2019
General workforce reduction	$	8.4	$	—	$	—	$	8.4
Post-Quantenna acquisition restructuring	15.7		—		—		15.7
Other	$	0.8	$	3.4	$	0.4	$	4.6
Total	$	24.9	$	3.4	$	0.4	$	28.7

_______________________

(1)During the year ended December 31, 2020, asset impairment charges related to a) property, plant and equipment amounting to $9.1 million b) investments in certain entities where the Company does not exert a significant influence amounting to $7.0 million and c) lease right-of-use assets of $1.4 million.

Summary of changes in accrued restructuring charges are as follows (in millions):


	Estimated employee separation charges		Estimated costs to exit		Total
Balance as of December 31, 2019	$	0.1	$	0.1	$	0.2
Charges	51.6		—		51.6
Usage	(45.5)		(0.1)		(45.6)
Balance as of December 31, 2020	$	6.2	$	—	$	6.2
Charges	67.5		—		67.5
Usage	(62.9)		—		(62.9)
Balance as of December 31, 2021	$	10.8	$	—	$	10.8

Year ended December 31, 2021:

2021 Involuntary Separation Program

During 2021, the Company implemented the Involuntary Separation Program restructuring program (the "ISP"). Under the ISP, the Company notified approximately 960 employees of their employment termination with aggregate severance costs and other charges amounting to $65.3 million. Approximately $9.8 million of the incurred charges remained accrued as of December 31, 2021. The Company also incurred certain insignificant charges relating to another program during the fourth quarter of 2021.

The Company continues to evaluate employee positions and locations for potential efficiencies and may incur additional charges in the future.

Year ended December 31, 2020:

Voluntary Separation Program

During the first quarter of 2020, the Company offered the Voluntary Separation Program (the "VSP") to employees that met certain criteria. Management approved 243 employees for participation in the VSP during the first quarter, after which the VSP was terminated. The aggregate expense for the VSP amounted to $27.5 million for the 243 employees, all of whom had exited by the end of the second quarter of 2020. All amounts under the VSP have been paid during 2020, and there are no payments remaining as of December 31, 2021.

2020 Involuntary Separation Program

During the second quarter of 2020, the Company implemented the ISP restructuring program. Under the ISP, the Company notified approximately 191 employees of their employment termination with aggregate severance costs and other benefits amounting to $11.8 million. All notified employees have exited during 2020 and an insignificant amount remained accrued as of December 31, 2021.

General workforce reduction

In addition to the VSP and the ISP, the Company undertook certain general workforce reduction measures during 2020, under which, the Company notified approximately 260 employees of their employment termination with aggregate severance costs and other benefits amounting $12.3 million. All notified employees have exited and an insignificant amount remained accrued as of December 31, 2021.

Year ended December 31, 2019:

General workforce reductions and post-Quantenna acquisition restructuring

During the first quarter of 2019, the Company approved and began to implement certain restructuring actions aimed at cost savings, primarily through workforce reductions. As of December 31, 2019, the Company had notified approximately 143 employees of their employment termination, all of whom had exited by December 31, 2019. For the year ended 2019, the expense for this program amounted to $8.4 million, all of which was paid as of December 31, 2019.

Following the acquisition of Quantenna and during the quarter ended June 28, 2019, the Company implemented a cost-reduction plan resulting in the elimination of approximately eight executive positions from Quantenna’s workforce, primarily as a result of redundancies. During the year ended December 31, 2019, the Company terminated an additional ten employees. The total restructuring expense of $15.7 million was attributable to the accelerated vesting of stock awards previously issued by Quantenna, executive retention and other severance benefits. All severance benefits for this program were paid as of December 31, 2019.

Balance Sheet Information

12 Months Ended

Dec. 31, 2021

Balance Sheet Related Disclosures [Abstract]

Balance Sheet Information

Note 8: Balance Sheet Information

Certain significant amounts included in the Company's Consolidated Balance Sheets consist of the following (in millions):


	As of
	December 31, 2021		December 31, 2020




Inventories:
Raw materials	$	174.2	$	135.7
Work in process	888.9		829.7
Finished goods	316.4		286.0
	$	1,379.5	$	1,251.4






Property, plant and equipment, net:
Land	$	118.5	$	119.7
Buildings	968.5		850.0
Machinery and equipment	4,777.8		4,538.0
Property, plant and equipment, gross	5,864.8		5,507.7
Less: Accumulated depreciation	(3,340.5)		(2,995.4)
	$	2,524.3	$	2,512.3
Accrued expenses:
Accrued payroll and related benefits	$	285.4	$	166.8
Sales related reserves	229.9		233.3



Income taxes payable	23.6		25.5

Other (1)	208.7		144.4
	$	747.6	$	570.0

_______________________

(1)The current portion of operating and financing lease liabilities are included in this amount. See discussion below.

Depreciation expense for property, plant and equipment totaled $436.5 million, $444.1 million and $409.7 million for 2021, 2020 and 2019, respectively.

Included within sales related reserves are ship and credit reserves for distributors amounting to $163.8 million and $180.2 million as of December 31, 2021 and 2020, respectively.

Leases

Operating and financing lease arrangements are comprised primarily of real estate and equipment agreements. The Company's existing leases do not contain significant restrictive provisions or residual value guarantees; however, certain leases contain renewal options and provisions for payment of real estate taxes, insurance and maintenance costs by the Company.

The components of operating lease expense are as follows (in millions):


	Year Ended
	December 31, 2021		December 31, 2020		December 31, 2019
Operating lease	$	39.7	$	38.2	$	35.0




Variable lease	3.8		4.2		4.0
Short-term lease	2.0		4.1		2.6
Total lease expense	$	45.5	$	46.5	$	41.6

The operating and financing lease liabilities included in the Consolidated Balance Sheets are as follows (in millions):


	As of
	December 31, 2021		December 31, 2020
Operating lease liabilities included in:
Accrued expenses and other current liabilities	$	32.5	$	32.2
Other long-term liabilities	142.4		115.7
Total	$	174.9	$	147.9
Operating ROU assets included in:
Other assets	$	170.1	136.3
Financing lease liabilities included in:
Accrued expenses and other current liabilities	$	12.7	$	—
Other long-term liabilities	10.2		—
Total	$	22.9	$	—
Financing ROU assets included in:
Other assets	$	22.3	—

As of December 31, 2021, the weighted-average remaining lease-terms and weighted-average discount rates were 8.5 years and 20.0 years and 4.3% and 6.0% for operating and financing leases, respectively.

As of December 31, 2021, there was an insignificant amount of commitments for operating leases that have not yet commenced. The reconciliation of the maturities of the operating and financing leases to the lease liabilities recorded in the Consolidated Balance Sheet as of December 31, 2021 is as follows (in millions):


	Operating Leases		Finance Leases
2022	$	37.9	$	13.6
2023	31.5		0.7
2024	28.7		0.7
2025	19.6		0.7
2026	12.4		0.8
Thereafter	85.0		15.2
Total lease payments	215.1		31.7
Less: Interest	(40.2)		(8.8)
Total lease liabilities	$	174.9	$	22.9

Long-Term Debt

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Long-Term Debt

Note 9: Long-Term Debt

The Company's long-term debt consists of the following (annualized interest rates, dollars in millions):


	As of
	December 31, 2021		December 31, 2020
Amended Credit Agreement:
Revolving Credit Facility due 2024, interest payable monthly at —% and 1.90%, respectively	$	—	$	700.0
Term Loan "B" Facility due 2026, interest payable monthly at 2.10% and 2.15%, respectively	1,598.2		1,614.5
0% Notes due 2027	805.0		—
3.875% Notes due 2028 (1)	700.0		700.0

1.625% Notes due 2023 (2)	155.1		575.0


Gross long-term debt, including current maturities	3,258.3		3,589.5
Less: Debt discount (3)	(149.0)		(69.7)
Less: Debt issuance costs (4)	(34.7)		(28.5)
Net long-term debt, including current maturities	3,074.6		3,491.3
Less: Current maturities	(160.7)		(531.6)
Net long-term debt	$	2,913.9	$	2,959.7

_______________________

(1)Interest is payable on March 1 and September 1 of each year at 3.875% annually.

(2)Interest is payable on April 15 and October 15 of each year at 1.625% annually.

(3)Debt discount of $7.5 million and $9.0 million for the Term Loan "B" Facility, $126.1 million and zero for the 0% Notes, $5.8 million and $6.5 million for the 3.875% Notes and $9.6 million and $54.2 million for the 1.625% Notes, in each case as of December 31, 2021 and December 31, 2020, respectively.

(4)Debt issuance costs of $17.7 million and $21.0 million for the Term Loan "B" Facility, $14.1 million and zero for the 0% Notes, $2.0 million and $2.3 million for the 3.875% Notes and $0.9 million and $5.2 million for the 1.625% Notes, in each case as of December 31, 2021 and December 31, 2020, respectively.

Maturities

Expected maturities of gross long-term debt (including current portion - see section regarding 1.625% Notes below) as of December 31, 2021 are as follows (in millions):


	Expected Maturities
2022	$	171.5
2023	16.3
2024	16.3
2025	16.3
2026	1,532.9
Thereafter	1,505.0
Total	$	3,258.3

0% Convertible Senior Notes due 2027

On May 19, 2021, the Company completed a private offering of $805.0 million aggregate principal amount of its 0% Notes, the proceeds of which were used to repurchase a portion of the 1.625% Notes in privately negotiated note repurchase or exchange transactions, repay a portion of the Revolving Credit Facility, pay the net cost of the related convertible note hedges after such costs were offset by the proceeds from the sale of warrants, and general corporate purposes. The 0% Notes were offered to qualified institutional buyers in accordance with Rule 144A under the Securities Act, and were issued under an indenture (the "0% Indenture") by and among the Company, the guarantors party thereto, and Wells Fargo Bank, National Association, as

trustee, which provides, among other things, that the 0% Notes will mature on May 1, 2027, unless earlier repurchased or redeemed by the Company or converted pursuant to their terms. On or after February 1, 2027, until the close of business on the second scheduled trading day immediately preceding May 1, 2027, holders may convert their 0% Notes at any time. The 0% Notes are the Company’s senior unsecured obligations and are fully and unconditionally guaranteed, on a joint and several basis, by each of the Company’s subsidiaries that is a borrower or guarantor under the Company’s Amended Credit Agreement. The Company may satisfy any conversion elections by paying cash up to the aggregate principal amount of the 0% Notes to be converted, and paying or delivering, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock, at the Company’s election, in respect of the remainder, if any, of its conversion obligation in excess of the aggregate principal amount of the 0% Notes to be converted.

The initial conversion rate of the 0% Notes is 18.8796 shares of common stock per $1,000 principal amount, which is equivalent to an initial conversion price of approximately $52.97 per share of common stock. The Company may redeem for cash all or any portion of the 0% Notes, at the Company’s option, on or after May 1, 2024, if the last reported sale price of the Company’s common stock has been at least 130% of the conversion price then in effect for at least 20 trading days during any consecutive 30 trading-day period. Prior to February 1, 2027, the holders may convert their 0% Notes under the following circumstances: (i) during any calendar quarter commencing after the calendar quarter ending on June 30, 2021 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days during the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (ii) during the five consecutive business-day period after any five consecutive trading-day period in which the trading price per $1,000 principal amount of the 0% Notes for each trading day of such period was less than 98% of the product of the last reported sale price of Company’s common stock and the conversion rate on each such trading day; (iii) if the Company calls any or all of the 0% Notes for redemption, at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or (iv) upon the occurrence of specified corporate transactions described in the 0% Indenture.

The conversion rate is subject to adjustment upon the occurrence of certain specified events as set forth in the 0% Indenture. The maximum number of shares of common stock issuable in connection with the conversion is 21.7 million. In accordance with the accounting guidance on embedded conversion features, the Company valued and bifurcated the conversion option, representing the debt discount, from the respective host debt instrument and recorded $139.9 million to stockholders’ equity. The debt discount represented the borrowing rate for non-convertible debt as of the date of issuance with similar maturity. The Company also incurred issuance costs of $19.0 million, of which $15.7 million was capitalized as debt issuance costs and $3.3 million was allocated to the conversion option and recorded to stockholders’ equity. The debt discount and debt issuance costs are being amortized at an effective interest rate of 3.2% over the contractual term of six years under the existing accounting standard. The carrying amount of the equity component, unamortized discount and issuance costs, and the net carrying amount of the liability component as of December 31, 2021 were $143.2 million, $140.2 million and $664.8 million, respectively. The interest cost relating to the amortization of debt discount and issuance costs recognized during the year ended December 31, 2021 was $15.3 million. The 0% Notes's if-converted value exceeded its principal amount by $227.2 million as of December 31, 2021, calculated using the stock price on that date.

In addition, the Company entered into convertible note hedge transactions with respect to the common stock with the initial purchasers of the 0% Notes or their affiliates ("Counterparties"). The convertible note hedges cover, subject to customary anti-dilution adjustments, the number of shares of common stock that initially underlie the 0% Notes, and are expected to reduce the potential dilution to the common stock and/or offset potential cash payments in excess of the principal amount upon conversion. The Company paid $160.3 million in cash for the convertible note hedges and recorded them as a reduction to stockholders’ equity. The Company applied ASC 815-40 - "Derivatives and Hedging - Contracts in Entity's Own Equity" and concluded that the convertible note hedges should be classified in stockholders’ equity with no subsequent remeasurement.

The Company also entered into warrant transactions with the Counterparties, whereby the Company sold warrants to acquire, subject to anti-dilution adjustments, the same number of shares of the Company’s common stock covered by the convertible note hedges at an initial strike price of $74.34 per share, which represents a 100% premium over the closing price of $37.17 per share on May 11, 2021. The maximum number of shares of common stock issuable in connection with the warrants is 30.4 million. The Company analyzed the transaction under ASC 815-40 - "Derivatives and Hedging - Contracts in Entity's Own Equity" and determined that the instrument met the criteria for classification as an equity transaction with no subsequent remeasurement. The Company received $93.8 million in cash for the sale of warrants, which was recorded as an increase to stockholders’ equity.

Amendments to the Amended Credit Agreement

The Company entered into the Amended Credit Agreement in 2016 which provides for a $1.97 billion revolving credit facility (the "Revolving Credit Facility") and a $2.4 billion term loan "B" facility (the “Term Loan "B" Facility”). Between 2016 and 2021, the Company, the Guarantors (as defined in the Amended Credit Agreement), the several lenders party thereto and the Agent (as defined in the Amended Credit Agreement) entered into nine amendments to the Amended Credit Agreement. These amendments, among others, reduced the interest rates payable and increased the amounts that may be borrowed under the Term Loan "B" Facility and the Revolving Credit Facility and also amended certain financial covenants.

On May 10, 2021, in anticipation of the issuance of the 0% Notes, the Company entered into the Ninth Amendment ("Ninth Amendment") to the Amended Credit Agreement. The Ninth Amendment provided for, among other things, modifications to the Amended Credit Agreement to permit the issuance of the 0% Notes and the repurchase or exchange of the 1.625% Notes, remove the availability of borrowings in currencies other than U.S. dollars in light of the unavailability of LIBO Rate for such other currencies beginning December 31, 2021, provide for increased capacity to dispose of certain assets, make investments and incur certain types of indebtedness and liens, increase the threshold for real estate properties required to be mortgaged to secure the facility, increase the ability to incur incremental debt facilities and remove certain conditions applicable to the incurrence of incremental facilities. There was no impact to the consolidated financial statements due to the Ninth Amendment.

On June 23, 2020, the Company entered into the Eighth Amendment ("Eighth Amendment") to the Amended Credit Agreement to change certain defined terms and to modify certain terms and conditions of the Amended Credit Agreement to align with the domestication of certain foreign subsidiaries. There was no impact to the consolidated financial statements due to the Eighth Amendment. See Note 16: ''Income Taxes'' for additional information on the domestication.

The obligations under the Amended Credit Agreement are guaranteed by the Guarantors and collateralized by a pledge of substantially all of the assets of the Company and the Guarantors, including a pledge of the equity interests in certain of the Company’s domestic and first tier foreign subsidiaries, subject to customary exceptions. The obligations under the Amended Credit Agreement are also collateralized by mortgage on certain real property assets of the Company and its domestic subsidiaries.

The Amended Credit Agreement includes a maximum total net leverage ratio as a financial maintenance covenant, which the Company was in compliance as of December 31, 2021. It also contains other customary affirmative and negative covenants and events of default.

Partial repurchase or exchange of the 1.625% Notes/Loss on debt refinancing and prepayment

On May 11, 2021, contemporaneously with the issuance of the 0% Notes, the Company entered into separate privately negotiated transactions with certain holders of the 1.625% Notes to repurchase or exchange, as applicable, $372.4 million in aggregate principal amount of the 1.625% Notes for a total consideration of $506.5 million in cash and 5.4 million shares of the Company’s common stock. The repurchases and exchanges resulted in a loss on debt prepayment of $26.2 million based on the fair value of the debt component, while the remainder of the consideration amounting to $141.6 million attributable to the equity component was recorded to stockholders’ equity. Separately, the Company received 9.1 million shares into treasury by terminating a portion of the convertible note hedge transactions that were originally entered at the time of issuance of the 1.625% Notes in a notional amount corresponding to the principal amount of the 1.625% Notes repurchased or exchanged and recorded $339.0 million to additional paid-in capital and treasury stock, with no overall impact to equity. Additionally, the Company terminated a portion of the warrant transactions originally entered at the time of issuance of the 1.625% Notes and issued 6.8 million shares with respect to a number of shares of common stock equal to the notional shares underlying such 1.625% Notes repurchased or exchanged.

On December 14, 2021, the Company repurchased $47.4 million in principal of 1.625% Notes for total consideration of $47.4 million in cash and 1.6 million shares of the Company's common stock. This transaction resulted in a loss on debt prepayment of $2.8 million based on the fair value of the debt component, while the remainder of the consideration amounting to $0.8 million attributable to the equity component was recorded to stockholders’ equity. Separately, the Company received 1.6 million shares into treasury by terminating a portion of the convertible note hedge transactions that were originally entered at the time of issuance of the 1.625% Notes in a notional amount corresponding to the principal amount of the 1.625% Notes redeemed and recorded $102.2 million to additional paid-in capital and treasury stock, with no overall impact to equity. Additionally, the Company terminated a portion of the warrant transactions originally entered at the time of issuance of the 1.625% Notes and issued 1.3 million shares with respect to a number of shares of common stock equal to the notional shares underlying such 1.625% Notes redeemed.

The remaining outstanding principal amount of the 1.625% Notes, amounting to $144.6 million, net of unamortized discount and issuance costs continues to be classified as a current portion of long-term debt as of December 31, 2021. Pursuant to the indenture governing the 1.625% Notes, because the last reported sale price of the Company’s common stock for at least 20 trading days during the period of 30 consecutive trading days ending on December 31, 2021 was greater than or equal to $26.94 (130% of the conversion price) on each applicable trading day, the holders have the right to surrender any portion of their 1.625% Notes (in minimum denominations of $1,000 in principal amount or an integral multiple thereof) for conversion during the calendar quarter ending March 31, 2022, and only during such calendar quarter.

The carrying amount of the equity component, unamortized discount and issuance costs, and the net carrying amount of the liability component as of December 31, 2021 were $31.2 million, $10.5 million and $144.6 million, respectively. The carrying amount of the equity component, unamortized discount and issuance costs, and the net carrying amount of the liability component as of December 31, 2020 were $115.7 million, $59.4 million and $515.6 million, respectively. Total interest expense relating to the coupon rate and amortization of debt discount and issuance costs recognized during the years ended December 31, 2021, 2020 and 2019 were $19.6 million, $28.7 million and $29.4 million, respectively.

The conversion rate of the 1.625% Notes is 48.2567 shares of common stock per $1,000 principal amount of 1.625% Notes (subject to adjustment in certain events), which is equivalent to a conversion price of approximately $20.72 per share of common stock. The unamortized discount and issuance costs are amortized at an effective interest rate of 5.27% over the remaining contractual term of approximately two years under the existing accounting standard. The convertible note hedge transactions and warrants issued in connection with the issuance of the 1.625% Notes were originally classified in stockholders' equity with no subsequent remeasurement using the guidance in ASC 815-40 - "Derivatives and Hedging - Contracts in Entity's Own Equity". The 1.625% Notes's if-converted value exceeded its principal amount by $353.4 million as of December 31, 2021, calculated using the stock price on that date.

Revolving Credit Facility

During the year ended December 31, 2021, the Company repaid the outstanding balance of $700.0 million under the Revolving Credit Facility using a portion of the net proceeds from the issuance of the 0% Notes and cash generated from operations. As of December 31, 2021, the Company had approximately $1.97 billion available under the Revolving Credit Facility for future borrowings, except for amounts utilized for letters of credit.

During the year ended December 31, 2020, the Company borrowed $1,165.0 million under the Revolving Credit Facility as a precautionary measure in order to increase the Company’s cash position and provide financial flexibility in light of the uncertainty resulting from the impact of the COVID-19 pandemic. During the third quarter of 2020, due to better macroeconomic and business conditions, the Company used the net proceeds from the issuance of the 3.875% Notes along with cash on hand to repay $1,200.0 million of outstanding borrowings under the Revolving Credit Facility. Additionally, on December 31, 2020, the Company repaid $65.0 million of outstanding borrowings under the Revolving Credit Facility.

Issuance of 3.875% Notes

On August 21, 2020, the Company completed its private offering of $700.0 million aggregate principal amount of the 3.875% Notes. The 3.875% Notes were offered in the United States to qualified institutional buyers pursuant to Rule 144A under the Securities Act and outside the United States pursuant to Regulation S under the Securities Act. The 3.875% Notes are fully and unconditionally guaranteed, on a joint and several basis, by each of the Company’s subsidiaries that is a borrower or Guarantor under the Amended Credit Agreement and will also be fully and unconditionally guaranteed by any of the Company’s subsidiaries that becomes a borrower or guarantees any indebtedness under the Amended Credit Agreement in the future.

The 3.875% Notes and the guarantees thereof are the Company’s and the Guarantors’ general unsecured obligations, respectively, and (i) rank equally in right of payment with all of the Company’s and the Guarantors’ existing and future senior indebtedness (including the 1.625% Notes); (ii) rank senior to any subordinated indebtedness that the Company or the Guarantors may incur; (iii) are effectively subordinated to all of the Company’s or the Guarantors’ existing and future secured indebtedness (including indebtedness under the Amended Credit Agreement), in each case, to the extent of the value of the assets securing such indebtedness; and (iv) are structurally subordinated in right of payment to all existing and future obligations of the Company’s subsidiaries that are not Guarantors of the 3.875% Notes.

The 3.875% Notes bear interest at a rate of 3.875% per year, payable semi-annually on March 1 and September 1 of each year, beginning on March 1, 2021, and will mature on September 1, 2028, unless earlier redeemed or repurchased by the Company. The original issue discount and debt issuance costs incurred by the Company in connection with the offering of the 3.875% Notes amounted to $9.4 million, which has been capitalized and will be amortized to interest expense through the maturity date

of September 1, 2028. The net proceeds from the issuance of the 3.875% Notes were used entirely to repay borrowings under the Revolving Credit Facility.

Maturity and Settlement of 1.00% Notes due 2020

The 1.00% Notes matured on December 1, 2020 and the Company paid $690.0 million in cash to holders, representing the principal portion of the 1.00% Notes, using the available cash and cash equivalents. The excess over the principal amount was settled by issuing shares of the Company's common stock held in treasury. The transaction resulted in a net impact of $88.7 million to additional paid-in capital and treasury stock, measured based on the acquisition cost of the reissued shares with no overall impact to equity. According to the terms of the hedge transactions entered at the time of issuance of the 1.00% Notes, on December 1, 2020, the Company repurchased an equivalent amount of shares of its common stock at the prevailing fair market value, to effectively offset the issuance of shares, which resulted in an impact of $321.0 million to additional paid-in capital and treasury stock, with no overall impact to equity.

At the time of issuance of the 1.00% Notes, the Company sold 37.3 million warrants to bank counterparties whereby the holders of the warrants had the option to purchase the equivalent number of shares of the Company’s common stock at a price of $25.96 per share from the Company. During 2021, the warrant holders exercised these warrants and the Company settled them by issuing 13.4 million shares of common stock, on a net-share basis.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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Earnings Per Share and Equity

12 Months Ended

Dec. 31, 2021

Earnings Per Share and Equity

Note 10: Earnings Per Share and Equity

Earnings Per Share

Net income per share of common stock attributable to ON Semiconductor Corporation is shown below (in millions, except per share data):


	Year ended December 31,
	2021		2020		2019
Net income attributable to ON Semiconductor Corporation	$	1,009.6	$	234.2	$	211.7
Basic weighted-average shares of common stock outstanding	425.7		410.7		410.9
Add: Incremental shares for:
Dilutive effect of share-based awards	2.5		1.9		1.9
Dilutive effect of convertible notes and warrants	15.6		6.2		3.2
Diluted weighted average shares of common stock outstanding	443.8		418.8		416.0

Net income per share of common stock attributable to ON Semiconductor Corporation:
Basic	$	2.37	$	0.57	$	0.52
Diluted	$	2.27	$	0.56	$	0.51

Basic income per share of common stock is computed by dividing net income attributable to the Company by the weighted average number of shares of common stock outstanding during the period. To calculate the diluted weighted-average shares of common stock outstanding, treasury stock method has been applied to calculate the number of incremental shares from the assumed issuance of shares relating to RSUs. The excluded number of anti-dilutive share-based awards was approximately 0.3 million, 0.8 million and 0.8 million for the years ended December 31, 2021, 2020 and 2019, respectively.

The dilutive impact related to the Company’s 0% Notes, 1.625% Notes and 1.00% Notes for the period such notes were outstanding, has been determined in accordance with the net share settlement requirements. While the 0% Notes are repayable in cash up to the par value, in accordance with their terms, the Company has assumed the 1.625% Notes to be repayable in cash up to the par value in accordance with the existing accounting standards. The 1.00% Notes matured and were repaid and settled on December 1, 2020.

The excess over par value for the 0% Notes and 1.625% Notes, if applicable, has been assumed to be convertible into common stock. Prior to conversion, the convertible note hedges are not considered for purposes of the earnings per share calculations, as their effect would be anti-dilutive. Upon conversion, the convertible note hedges are expected to offset the dilutive effect of the 0% Notes and 1.625% Notes when the stock price is above $52.97 and $20.72 per share, respectively. The dilutive impact of the warrants issued concurrently with the issuance of the 0% Notes, 1.625% Notes and 1.00% Notes with exercise prices of

$74.34, $30.70 and $25.96, respectively, has been included in the calculation of diluted weighted-average common shares outstanding, if applicable. All of the warrants issued in connection with the 1.00% Notes were settled during 2021.

Equity

Share Repurchase Program

Under the Company's share repurchase program announced on November 15, 2018 (the "Share Repurchase Program"), the Company may repurchase up to $1.5 billion (exclusive of fees, commissions and other expenses) of the Company's common stock from December 1, 2018 through December 31, 2022. While there were no repurchases under the Share Repurchase Program during the year ended December 31, 2021, the repurchases amounted to $65.3 million and $138.9 million during the years ended December 31, 2020 and December 31, 2019, respectively. As of December 31, 2021, the remaining authorized amount under the Share Repurchase Program was $1,295.8 million.

Activity under the Share Repurchase Program is as follows (in millions, except per share data):


	Year ended December 31,
	2021		2020		2019
Number of repurchased shares (1)	—		3.6		7.8

Aggregate purchase price	$	—	$	65.3	$	138.9
Fees, commissions and other expenses	—		0.1		0.1

Total cash used for share repurchases	$	—	$	65.4	$	139.0

Weighted-average purchase price per share (2)	$	—	$	18.08	$	17.89
Available under the Share Repurchase Program	$	1,295.8	$	1,295.8	$	1,361.1

_______________________

(1)None of these shares had been reissued or retired as of December 31, 2021 but may be reissued or retired later.

(2) Exclusive of fees, commission or other expenses

Reissuance of shares held in treasury stock

In connection with the maturity of the 1.00% Notes on December 1, 2020, the Company reissued shares of common stock held in treasury to settle the excess over the principal amount. This was the first time the Company reissued shares held in treasury stock and accounted for such reissuance on a first-in, first-out basis. Pursuant to the hedge transactions entered concurrently with the issuance of the 1.00% Notes, the Company acquired an equivalent number of shares of its common stock at the prevailing fair market value, to effectively offset the reissuance from treasury stock. This repurchase did not reduce the authorized amount remaining under the Share Repurchase Program.

Shares for Restricted Stock Units Tax Withholding

The amounts remitted during the years ended December 31, 2021, 2020 and 2019 were $38.9 million, $20.0 million and $33.5 million, respectively, for which the Company withheld approximately 0.9 million, 1.1 million and 1.6 million shares of common stock, respectively, that were underlying the RSUs that vested. None of these shares had been reissued or retired as of December 31, 2021 but may be reissued or retired later. These deemed repurchases in connection with tax withholding upon vesting were not made under the Share Repurchase Program, and the amounts spent in connection with such deemed repurchases did not reduce the authorized amount remaining under the Share Repurchase Program.

Non-Controlling Interest

Leshan operates assembly and test operations in Leshan, China. The Company owns 80% of the outstanding equity interests in Leshan, and the results of Leshan have been consolidated in the Company's financial statements. At December 31, 2021, the Leshan non-controlling interest balance was $19.0 million. This balance included the Leshan non-controlling interest's $1.6 million share of the earnings for the year ended December 31, 2021 offset by $2.2 million of dividend declared to the non-controlling shareholder. At December 31, 2020, the Leshan non-controlling interest balance was $19.6 million. This balance included the Leshan non-controlling interest's $2.2 million share of the earnings for the year ended December 31, 2020 offset by $5.0 million of dividends paid to the non-controlling shareholder.

ON Semiconductor Aizu Co. Ltd. ("OSA") operates a front-end wafer fabrication facility in Aizuwakamatsu, Japan. During 2020, the Company acquired the remaining equity interest in OSA from Fujitsu Semiconductor Limited ("FSL"), whereby OSA became a wholly-owned subsidiary of the Company. The purchase price payable to FSL for the remaining 40% equity, offset by the purchase price adjustment, resulted in the Company receiving $26.0 million in settlement of the purchase price from FSL during the year ended December 31, 2020. The results of OSA have been consolidated in the Company’s financial statements.

Stockholders' Rights Plan

On June 7, 2020, the Company's Board of Directors authorized and declared a dividend of one preferred share purchase right (a "Right") for each outstanding share of common stock to the stockholders of record on June 18, 2020. The Rights, which continued to have a de minimis value from the time they were issued, expired on June 7, 2021.

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

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Share-based Payment Arrangement [Abstract]

Share-Based Compensation

12 Months Ended

Dec. 31, 2021

Share-Based Compensation

Note 11: Share-Based Compensation

Total share-based compensation expense related to the Company's RSUs, stock grant awards and ESPP was recorded within the Consolidated Statements of Operations and Comprehensive Income as follows (in millions):


	Year Ended December 31,
	2021		2020		2019
Cost of revenue	$	15.6	$	11.5	$	10.6
Research and development	24.2		18.2		17.0
Selling and marketing	16.6		12.9		14.8
General and administrative	44.9		25.1		37.0

Share-based compensation expense	101.3		67.7		79.4
Income tax benefit	(21.3)		(14.2)		(16.7)
Share-based compensation expense, net of taxes	$	80.0	$	53.5	$	62.7

At December 31, 2021, total unrecognized share-based compensation expense, net of estimated forfeitures, related to non-vested RSUs with service, performance and market conditions was $92.6 million, which is expected to be recognized over a weighted-average period of 1.2 years. There was an insignificant amount of stock options exercised during the year ended December 31, 2021. Upon option exercise, vesting of RSUs, stock grant awards or completion of a purchase under the ESPP, the Company issues new shares of common stock.

Share-Based Compensation Information

The fair value per unit of RSU and stock grant award is determined on the grant date. There were no employee stock options granted during the years ended December 31, 2021, 2020 and 2019. Share-based compensation expense is based on awards ultimately expected to vest. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The annualized pre-vesting forfeitures for RSUs were estimated to be approximately 6% for the year ended December 31, 2021 and 5% for the years ended December 31, 2020 and 2019.

Plan Descriptions

On March 23, 2010, the Company adopted the Amended and Restated SIP which has been subsequently amended over the years primarily to increase the number of shares of common stock subject to all awards. Generally, RSUs granted under the Amended and Restated SIP vest ratably over three years for awards with service conditions and over two or three years for awards with performance or market conditions, or a combination thereof, and are settled in shares of the Company's common stock upon vesting. Generally, upon the termination of an RSU holder's employment, all unvested RSUs will immediately cancel, except under circumstances where the service condition has been fulfilled.

On May 20, 2021, the Company's stockholders approved certain amendments to the Amended and Restated SIP to extend the expiration date from 2022 to 2031 and to increase the number of shares of common stock subject to all awards by 22.5 million to 109.5 million. As of December 31, 2021, there was an aggregate of 42.2 million shares of common stock available for grant under the Amended and Restated SIP.

Restricted Stock Units

A summary of activity of RSUs during the year ended December 31, 2021 is as follows (number of shares in millions):


	Number of Shares	Weighted-Average Grant Date Fair Value
Nonvested shares of RSUs at December 31, 2020	11.3	$	20.73
Granted	2.6	42.45

Released	(3.0)	21.51
Forfeited	(4.7)	22.03
Nonvested shares of RSUs at December 31, 2021	6.2	28.60

During 2021, the Company awarded 1.1 million RSUs to certain officers and employees of the Company that vest upon the achievement of certain performance criteria and market conditions. The number of units expected to vest is evaluated each reporting period and compensation expense is recognized for those units for which achievement of the performance criteria is considered probable. Compensation expense for RSUs with market conditions are recognized based on the grant date fair value irrespective of the achievement of the condition.

As of December 31, 2021, unrecognized compensation expense, net of estimated forfeitures related to non-vested RSUs granted under the Amended and Restated SIP with service, performance and market conditions, was $65.7 million, $7.5 million and $19.4 million, respectively. For RSUs with time-based service conditions, expense is being recognized over the vesting period; for RSUs with performance criteria, expense is recognized over the period when the performance criteria is expected to be achieved; for RSUs with market conditions, expense is recognized over the period in which the condition is assessed irrespective of whether it would be achieved or not. Unrecognized compensation cost for awards with certain performance criteria that are not expected to be achieved is not included here. Total compensation expense related to performance-based, service-based, and market-based RSUs was $92.9 million for the year ended December 31, 2021, which included $46.9 million for RSUs with time-based service conditions that were granted in 2021 and prior that are expected to vest.

Stock Grant Awards

During the year ended December 31, 2021, the Company granted 0.1 million shares of stock under stock grant awards to certain directors of the Company with immediate vesting at a weighted-average grant date fair value of $37.91 per share. Total compensation expense related to stock grant awards for the year ended December 31, 2021 was $2.0 million.

Employee Stock Purchase Plan

On February 17, 2000, the Company adopted the ESPP. During the years ended December 31, 2021, 2020 and 2019 employees purchased approximately 0.7 million, 1.8 million and 1.7 million shares, respectively, under the ESPP. On May 20, 2021, the stockholders approved an amendment to the ESPP, which increased the number of shares available to be issued pursuant to the ESPP by 6.0 million to 34.5 million. As of December 31, 2021, there were approximately 8.2 million shares available for issuance under the ESPP. Total compensation expense related to the ESPP for the year ended December 31, 2021 was $6.4 million.

Employee Benefit Plans

12 Months Ended

Dec. 31, 2021

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Employee Benefit Plans

Note 12: Employee Benefit Plans

Defined Benefit Pension Plans

The Company maintains defined benefit pension plans for employees of certain of its foreign subsidiaries. Such plans conform to local practice in terms of providing minimum benefits mandated by law, collective agreements or customary practice. The Company recognizes the aggregate amount of all overfunded plans as assets and the aggregate amount of all underfunded plans as liabilities in its Consolidated Balance Sheets. The Company's expected long-term rate of return on plan assets is updated at least annually, taking into consideration its asset allocation, historical returns on similar types of assets and the current economic environment. For estimation purposes, the Company assumes its long-term asset mix will generally be consistent with the current mix. The Company determines its discount rates using highly rated corporate bond yields and government bond yields.

Benefits under all of the plans are valued utilizing the projected unit credit cost method. The Company's policy is to fund its

defined benefit plans in accordance with local requirements and regulations. The funding is primarily driven by the current assessment of the economic environment and projected benefit payments of foreign subsidiaries. The measurement date for determining the defined benefit obligations for all plans is December 31 of each year.

The Company recognizes actuarial gains and losses during the period the Company's annual pension plan actuarial valuations are prepared, which generally occurs during the fourth calendar quarter of each year, or during any interim period where a revaluation is deemed necessary. For the year ended December 31, 2021, the Company recognized an actuarial gain of $21.4 million, while actuarial losses of $4.0 million and $15.6 million were recognized for the years ended December 31, 2020 and 2019, respectively. Of the actuarial gain for 2021, $18.4 million was primarily due to an increase in the discount rates while better than expected return on plan assets due to other changes in actuarial assumptions and plan experience amounted to $3.0 million.

Following is a summary of the status of the Company's foreign defined benefit pension plans and the net periodic pension cost ($ in millions):


	Year Ended December 31,
	2021			2020			2019
Service cost	$	11.7		$	10.9		$	9.4
Interest cost	4.5			4.7			5.0
Expected return on plan assets	(6.5)			(6.3)			(6.0)

Curtailment gain	(0.4)			(1.6)			—
Actuarial (gains) losses	(21.4)			4.0			15.6
Total net periodic pension (gain) cost	$	(12.1)		$	11.7		$	24.0
Weighted average assumptions
Discount rate used for net periodic pension costs	1.31		%	1.43		%	1.74		%
Discount rate used for pension benefit obligations	1.54		%	1.31		%	1.43		%
Expected return on plan assets	3.04		%	3.06		%	3.23		%
Rate of compensation increase	3.45		%	3.26		%	3.07		%

The long-term rate of return on plan assets was determined using the weighted-average method, which incorporates factors that include the historical inflation rates, interest rate yield curve and current market conditions.


	2021		2020
Change in projected benefit obligation (PBO)
Projected benefit obligation at the beginning of the year	$	351.2	$	322.9
Service cost	11.7		10.9
Interest cost	4.5		4.7
Net actuarial (gain) loss	(18.4)		8.1
Benefits paid by plan assets	(15.9)		(8.9)
Benefits paid by the Company	(12.2)		(7.4)
Participant contributions	0.1		—
Curtailments and settlements	(0.4)		(1.6)
Translation and other (gain) loss	(27.0)		22.5
Projected benefit obligation at the end of the year	$	293.6	$	351.2
Accumulated benefit obligation at the end of the year	$	244.5	$	288.3
Change in plan assets
Fair value of plan assets at the beginning of the year	$	209.3	$	190.2



Actual return on plan assets	9.5		10.4
Benefits paid from plan assets	(15.9)		(8.9)
Employer contributions	3.9		4.3

Translation and other gain (loss)	(17.1)		13.3
Fair value of plan assets at the end of the year	$	189.7	$	209.3

	As of December 31,
	2021		2020
Plans with underfunded or non-funded projected benefit obligation
Projected benefit obligation	$	205.2	$	248.7
Fair value of plan assets	86.6		97.7
Plans with underfunded or non-funded accumulated benefit obligation
Accumulated benefit obligation	$	131.6	$	189.4
Fair value of plan assets	58.9		97.7
Amounts recognized in the balance sheet consist of
Non-current assets	$	14.7	$	9.0
Current liabilities	(0.2)		(0.3)
Non-current liabilities	(118.4)		(150.6)
Funded status	$	(103.9)	$	(141.9)

Plan Assets

The Company's overall investment strategy is to focus on stable and low credit risk investments aimed at providing a positive rate of return to the plan assets. The Company has an investment mix with a wide diversification of asset types and fund strategies that are aligned with each region and foreign location's economy and market conditions. Investments in government securities are generally guaranteed by the respective government offering the securities. Investments in corporate bonds, equity securities, and foreign mutual funds are made with the expectation that these investments will give an adequate rate of long-term returns despite periods of high volatility. Other types of investments include investments in cash deposits, money market funds and insurance contracts. Asset allocations are based on the anticipated required funding amounts, timing of benefit payments, historical returns on similar assets and the influence of the current economic environment.

The following table sets forth, by level within the fair value hierarchy, a summary of investments measured at fair value and the asset allocations of the plan assets in the Company's foreign pension plans (in millions):



	As of December 31, 2021
	Allocation		Total		Level 1		Level 2		Level 3
Asset Category
Cash/Money Markets	2	%	$	3.6	$	3.6	$	—	$	—
Foreign Government/Treasury Securities (1)	9	%	17.2		17.2		—		—
Corporate Bonds, Debentures (2)	17	%	32.5		—		32.5		—
Equity Securities (3)	27	%	52.3		—		52.3		—
Mutual Funds	6	%	10.9		—		10.9		—
Investment and Insurance Contracts (4)	39	%	73.2		—		22.6		50.6
	100	%	$	189.7	$	20.8	$	118.3	$	50.6


	As of December 31, 2020
	Allocation		Total		Level 1		Level 2		Level 3
Asset Category
Cash/Money Markets	2	%	$	4.1	$	4.1	$	—	$	—
Foreign Government/Treasury Securities (1)	10	%	21.4		21.4		—		—
Corporate Bonds, Debentures (2)	18	%	36.9		—		36.9		—
Equity Securities (3)	23	%	48.5		—		48.5		—
Mutual Funds	5	%	9.5		—		9.5		—
Investment and Insurance Contracts (4)	42	%	88.9		—		31.4		57.5
	100	%	$	209.3	$	25.5	$	126.3	$	57.5

_______________________

(1)Includes investments primarily in guaranteed return securities.

(2) Includes investments in government bonds and corporate bonds of developed countries, emerging market government bonds, emerging market corporate bonds and convertible bonds.

(3) Includes investments in equity securities of developed countries and emerging markets.

(4) Includes certain investments with insurance companies that guarantee a minimum rate of return on the investment.

When available, the Company uses observable market data, including pricing on recently closed market transactions and quoted prices, which are included in Level 2. When data is unobservable, valuation methodologies using comparable market data are utilized and included in Level 3. Activity during the years ended December 31, 2021 and 2020, respectively, for plan assets with fair value measurement using significant unobservable inputs (Level 3) were as follows (in millions):


	Investment and Insurance Contracts
Balance at December 31, 2019	$	52.0
Actual return on plan assets	0.8
Purchase, sales and settlements, net	(0.3)
Foreign currency impact	5.0
Balance at December 31, 2020	$	57.5
Actual return on plan assets	(0.8)
Purchase, sales and settlements, net	(2.1)
Foreign currency impact	(4.0)
Balance at December 31, 2021	$	50.6

The Company expects to contribute an insignificant amount during 2022 to its foreign defined benefit plans. The expected benefit payments from the Company's defined benefit plans from 2022 through 2026 and the five years thereafter are as follows (in millions):


2022	$	8.9
2023	10.1
2024	12.1
2025	14.5
2026	15.3
Five years thereafter	101.7
Total	$	162.6

Defined Contribution Plans

The Company has a deferred compensation savings plan for all eligible U.S. employees established under the provisions of Section 401(k) of the Internal Revenue Code. Eligible employees may contribute a percentage of their salary subject to certain limitations. The Company has elected to match 100% of employee contributions between 0% and 4% of their salary, with an annual limit as mandated by the Internal Revenue Service. The Company recognized $16.7 million, $19.4 million and $18.1 million of expense relating to matching contributions in 2021, 2020 and 2019, respectively.

Certain foreign subsidiaries have defined contribution plans in which eligible employees participate. The Company recognized compensation expense of $27.2 million, $21.8 million and $20.6 million relating to these plans for the years ended 2021, 2020 and 2019, respectively.

The entire disclosure for retirement benefits.

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Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

12 Months Ended

Dec. 31, 2021

Commitments and Contingencies

Note 13: Commitments and Contingencies

Purchase Obligations

The Company has agreements with suppliers, external manufacturers and other vendors for capital expenditures, inventory purchases, manufacturing services, information technology and other goods and services. The following is a schedule by year of future minimum purchase obligations under non-cancelable arrangements entered into during the ordinary course of business as of December 31, 2021 (in millions):



Year Ending December 31,
2022 (1)	$	1,292.6
2023	326.8
2024	256.5
2025	4.9
2026	2.8
Thereafter	8.1
Total	$	1,891.7

(1) The Company had incurred additional commitments related to the pending acquisition of a manufacturing facility (See Note 5: ''Acquisitions and Divestitures''), of which $170.0 million was deposited with the seller during the prior years. The remaining commitment of $230.0 million will be owed on or around December 31, 2022.

Environmental Contingencies

The Company’s headquarters in Phoenix, Arizona are located on property that is a "Superfund" site, which is a property listed on the National Priorities List and subject to clean-up activities under the Comprehensive Environmental Response, Compensation, and Liability Act ("CERCLA"). Motorola and Freescale (acquired by NXP Semiconductors N.V.) have been involved in the clean-up activities of on-site solvent contaminated soil and groundwater and off-site contaminated groundwater pursuant to consent decrees with the State of Arizona. As part of the Company’s separation from Motorola in 1999, Motorola retained responsibility for this contamination, and Motorola and Freescale have agreed to indemnify the Company with respect to remediation costs and other costs or liabilities related to this matter. Any costs to the Company in connection with this matter have not been, and, based on the information available, are not expected to be, material.

Though the Company has encountered and dealt with a number of environmental issues over time relating to the various locations that comprise its operations, any costs to the Company in connection with such matters have not been, and, based on the information available, are not expected to be material.

The following presents a summary of such environmental contingencies:

•Aizu, Japan. The Company’s former front-end manufacturing location in Aizu, Japan is located on property where soil and ground water contamination was detected. The Company believes that the contamination originally occurred during a time when the facility was operated by a prior owner. The Company worked with local authorities to implement a remediation plan and has completed remaining remediation. The majority of the cost of remediation was covered by insurance. During 2018, semi-annual groundwater monitoring indicated that the treatment was effective, and accordingly, we ceased such monitoring and have determined that this remediation project is complete.

•Czech Republic. The Company’s manufacturing facility in the Czech Republic has undergone remediation to respond to releases of hazardous substances that occurred during the years that this facility was operated by government-owned entities. The remediation projects consisted primarily of monitoring groundwater wells located on-site and off-site with additional action plans developed to respond in the event certain contamination levels are exceeded. The government of the Czech Republic has agreed to indemnify the Company and its respective subsidiaries, subject to specified limitations, for remediation costs associated with this historical contamination. The Company has completed remediation on this project, and accordingly, has ceased all related monitoring efforts.

•East Greenwich, Rhode Island. The Company’s design center in East Greenwich, Rhode Island is located on property that has localized soil contamination. In connection with the purchase of the facility, the Company entered into a Settlement Agreement and Covenant Not to Sue with the State of Rhode Island. This agreement requires that remedial actions be undertaken and a quarterly groundwater monitoring program be initiated by the former owners of the property.

•Santa Clara, California. As a result of the acquisition of AMIS in 2008, the Company is a "primary responsible party" to an environmental remediation and clean-up plan at AMIS’s former corporate headquarters in Santa Clara, California. Costs incurred by AMIS include implementation of the clean-up plan, operations and maintenance of remediation systems, and other project management costs. However, AMIS’s former parent company, a subsidiary of Nippon Mining, contractually agreed to indemnify AMIS and the Company for any obligations relating to environmental remediation and clean-up activities at this location.

•South Portland, Maine. Through its acquisition of Fairchild, the Company acquired a facility in South Portland, Maine. This facility has ongoing environmental remediation projects to respond to certain releases of hazardous substances that occurred prior to the leveraged recapitalization of Fairchild from its former parent company, National Semiconductor Corporation, which is now owned by Texas Instruments Incorporated. Although the Company may incur certain liabilities with respect to these remediation projects, pursuant to a 1997 asset purchase agreement entered into in connection with the Fairchild recapitalization, National Semiconductor Corporation agreed to indemnify Fairchild, without limitation and for an indefinite period of time, for all future costs related to these projects.

•Bucheon, South Korea. Under a 1999 asset purchase agreement pursuant to which Fairchild purchased the power device business of Samsung, Samsung agreed to indemnify Fairchild in an amount up to $150.0 million for remediation costs and other liabilities related to historical contamination at Samsung’s Bucheon, South Korea operations.

•Mountain Top, Pennsylvania. Under a 2001 asset purchase agreement pursuant to which Fairchild purchased a manufacturing facility in Mountain Top, Pennsylvania, Intersil Corp. (subsequently acquired by Renesas Electronics Corporation) agreed to indemnify Fairchild for remediation costs and other liabilities related to historical contamination at the facility.

•Hartford, Illinois. The Company was notified by the EPA that it has been identified as a PRP under CERCLA in the Chemetco Superfund matter. Chemetco, a defunct reclamation services supplier that operated in Hartford, Illinois at what is now a Superfund site, has performed reclamation services for the Company in the past. The EPA is pursuing Chemetco customers for contribution to the site clean-up activities. The Company has joined a PRP group, which is cooperating with the EPA in the evaluation and funding of the clean-up activities.

Financing Contingencies

In the ordinary course of business, the Company provides standby letters of credit or other guarantee instruments to certain parties initiated by either the Company or its subsidiaries, as required for transactions, including, but not limited to, material purchase commitments, agreements to mitigate collection risk, leases, utilities or customs guarantees. As of December 31, 2021, the Company's Revolving Credit Facility included $15.0 million available for the issuance of letters of credit. There were $0.9 million letters of credit outstanding under the Revolving Credit Facility as of December 31, 2021, which reduced the Company's borrowing capacity. The Company also had outstanding guarantees and letters of credit outside of its Revolving Credit Facility totaling $6.1 million as of December 31, 2021.

As part of obtaining financing in the ordinary course of business, the Company issued guarantees related to certain of its subsidiaries, which totaled $0.9 million as of December 31, 2021. Based on historical experience and information currently available, the Company believes that it will not be required to make payments under the standby letters of credit or guarantee arrangements for the foreseeable future.

Indemnification Contingencies

The Company is a party to a variety of agreements entered into in the ordinary course of business, including acquisition agreements, pursuant to which it may be obligated to indemnify the other parties for certain liabilities that arise out of or relate to the subject matter of the agreements. Some of the agreements entered into by the Company require it to indemnify the other party against losses due to IP infringement, property damage (including environmental contamination), personal injury, failure to comply with applicable laws, the Company’s negligence or willful misconduct or breach of representations and warranties and covenants related to such matters as title to sold assets. In the case of certain acquisition agreements, these agreements may require us to maintain such indemnification provisions for the acquiree’s directors, officers and other employees and agents, in certain cases for a number of years following the acquisition.

The Company faces risk of exposure to warranty and product liability claims in the event that its products fail to perform as expected or such failure of its products results, or is alleged to result, in economic damage, bodily injury or property damage. In addition, if any of the Company’s designed products are alleged to be defective, the Company may be required to participate in their recall. Depending on the significance of any particular customer and other relevant factors, the Company may agree to provide more favorable rights to such customer for valid defective product claims.

The Company and its subsidiaries provide for indemnification of directors, officers and other persons in accordance with limited liability company operating agreements, certificates of incorporation, by-laws, articles of association or similar organizational documents, as the case may be. Section 145 of the Delaware General Corporation Law ("DGCL") authorizes a court to award, or a corporation’s board of directors to grant, indemnity to directors and officers under certain circumstances and subject to certain limitations. The terms of Section 145 of the DGCL are sufficiently broad to permit indemnification under certain circumstances for liabilities, including reimbursement of expenses incurred, arising under the Exchange Act. As permitted by the DGCL, the Company’s Amended and Restated Certificate of Incorporation (as amended, the "Certificate of Incorporation") contains provisions relating to the limitation of liability and indemnification of directors and officers. The Certificate of Incorporation eliminates the personal liability of each of the Company’s directors to the fullest extent permitted by Section 102(b)(7) of the DGCL, as it may be amended or supplemented, and provides that the Company will indemnify its directors and officers to the fullest extent permitted by Section 145 of the DGCL, as amended from time to time.

The Company has entered into indemnification agreements with each of its directors and executive officers. The form of agreement (the "Indemnification Agreement") provides, subject to certain exceptions and conditions specified in the Indemnification Agreement, that the Company will indemnify each indemnitee to the fullest extent permitted by Delaware law against all expenses, judgments, fines and amounts paid in settlement actually and reasonably incurred by such person in connection with a proceeding or claim in which such person is involved because of his or her status as one of the Company’s directors or executive officers. In addition, the Indemnification Agreement provides that the Company will, to the extent not prohibited by law and subject to certain exceptions and repayment conditions, advance specified indemnifiable expenses incurred by the indemnitee in connection with such proceeding or claim.

The Company also maintains directors’ and officers’ insurance policies that indemnify its directors and officers against various liabilities, including certain liabilities under the Exchange Act, which might be incurred by any director or officer in his or her capacity as such.

While the Company’s future obligations under certain agreements may contain limitations on liability for indemnification, other agreements do not contain such limitations and under such agreements it is not possible to predict the maximum potential

amount of future payments due to the conditional nature of the Company’s obligations and the unique facts and circumstances involved in each particular agreement. Historically, payments made by the Company under any of these indemnities have not had a material effect on the Company’s business, financial condition, results of operations or cash flows. Additionally, the Company does not believe that any amounts that it may be required to pay under these indemnities in the future will be material to the Company’s business, financial position, results of operations, or cash flows.

Legal Matters

From time to time, the Company is party to various legal proceedings arising in the ordinary course of business, including indemnification claims, claims of alleged infringement of patents, trademarks, copyrights and other IP rights, claims of alleged non-compliance with contract provisions and claims related to alleged violations of laws and regulations. The Company regularly evaluates the status of the legal proceedings in which it is involved to assess whether a loss is probable or there is a reasonable possibility that a loss, or an additional loss, may have been incurred and determines if accruals are appropriate. If accruals are not appropriate, the Company further evaluates each legal proceeding to assess whether an estimate of possible loss or range of possible loss can be made for disclosure. Although litigation is inherently unpredictable, the Company believes that it has adequate provisions for any probable and estimable losses. Nevertheless, it is possible that the Company’s consolidated financial position, results of operations or liquidity could be materially and adversely affected in any particular period by the resolution of a legal proceeding. The Company’s estimates do not represent its maximum exposure. Legal expenses related to defense, negotiations, settlements, rulings and advice of outside legal counsel are expensed as incurred.

The Company is currently involved in a variety of legal matters that arise in the ordinary course of business. Based on information currently available, except as disclosed below, the Company is not involved in any pending or threatened legal proceedings that it believes could reasonably be expected to have a material adverse effect on its financial condition, results of operations or liquidity. The litigation process is inherently uncertain, and the Company cannot guarantee that the outcome of any litigation matter will be favorable to the Company.

Patent Litigation with Power Integrations, Inc. ("PI")

During 2019, the Company and PI entered into a Settlement Agreement (the "Settlement Agreement") pursuant to which the parties agreed to withdraw all outstanding legal and administrative disputes on the terms set forth in a binding term sheet previously entered into by and among the Company and PI on October 4, 2019.

Pursuant to the Settlement Agreement, the Company paid PI $175.0 million in cash during 2019, and the parties have dismissed all previously pending litigation and administrative proceedings. In addition, each party agreed to release the other party from any claims to damages or monetary relief for alleged acts of patent infringement across the various patent infringement litigation and not to file any additional action for legal or equitable relief until June 30, 2023. Neither party granted any licenses to the other.

Intellectual Property Matters

The Company faces risk of exposure from claims of infringement of the IP rights of others. In the ordinary course of business, the Company receives letters asserting that the Company’s products or components breach another party’s rights. Such letters may request royalty payments from the Company, that the Company cease and desist using certain IP or other remedies.

Fair Value Measurements

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 14: Fair Value Measurements

Fair Value of Financial Instruments

During the year ended December 31, 2021, the Company began investing portions of its excess cash in different marketable securities, which are classified as available-for-sale. The following table summarizes the Company's financial assets and liabilities, excluding pension assets, disaggregated by the security type, measured at fair value on a recurring basis (in millions):


As of
December 31, 2021									Fair Value Level
Description	Amortized Cost		Unrealized gains		Unrealized losses		Fair value		Level 1		Level 2
Assets:
Cash and cash equivalents:
Demand and time deposits	$	19.5	$	—	$	—	$	19.5	$	19.5	$	—
Money market funds	0.7		—		—		0.7		0.7		—
Corporate bonds	1.6		—		—		1.6		—		1.6
Commercial paper	2.0		—		—		2.0		—		2.0

Other current assets:
Corporate bonds	$	16.0	$	—	$	—	$	16.0	$	—	$	16.0
Certificate of deposit	1.9		—		—		1.9		—		1.9
Commercial paper	5.0		—		—		5.0		3.0		2.0
US Treasury bonds	0.4		—		—		0.4		—		0.4

Other assets:
Corporate bonds	$	19.7	$	—	$	—	$	19.7	$	—	$	19.7

US Treasury bonds	1.6		—		—		1.6		—		1.6

The investments included in other assets have maturity dates ranging between one and five years.


As of
December 31, 2020									Fair Value Level
Description	Amortized Cost		Unrealized gains		Unrealized losses		Fair value		Level 1		Level 2
Assets:
Cash and cash equivalents:
Demand and time deposits	$	8.5	$	—	$	—	$	8.5	$	8.5	$	—

Other

The carrying amounts of other current assets and liabilities, such as accounts receivable and accounts payable, approximate fair value based on the short-term nature of these instruments.

Fair Value of Long-Term Debt, including Current Portion

The carrying amounts and fair value of the Company’s long-term borrowings are as follows (in millions):


	As of December 31,
	2021				2020
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current portion (1)
Convertible notes	$	809.4	$	1,696.7	$	515.6	$	967.1
Long-term debt	2,265.2		2,245.5		2,975.7		2,966.8

_______________________

(1)Long-term debt is carried on the Consolidated Balance Sheets at historical cost net of debt discount and issuance costs.

The fair value of the 0% Notes (as of December 31, 2021), 3.875% Notes and 1.625% Notes were estimated based on market prices in active markets (Level 1). The fair value of other long-term debt was estimated based on discounting the remaining

principal and interest payments using current market rates for similar debt (Level 2) at December 31, 2021 and December 31, 2020.

Fair Values Measured on a Non-Recurring Basis

The Company's non-financial assets, such as property, plant and equipment, goodwill and intangible assets are recorded at fair value upon a business combination and are remeasured at fair value only if an impairment charge is recognized. The Company uses unobservable inputs to the valuation methodologies that are significant to the fair value measurements, and the valuations require management's judgment due to the absence of quoted market prices. The Company determines the fair value of its held and used assets, goodwill and intangible assets using an income, cost or market approach as determined reasonable.

As of December 31, 2021 and 2020, there were no non-financial assets included in the Company's Consolidated Balance Sheet that were remeasured at fair value on a non-recurring basis. The following table shows the adjustments to fair value of certain of the Company's non-financial assets that had an impact on the Company's results of operations (in millions):


	Year Ended December 31,
	2021		2020		2019
Nonrecurring fair value measurements
Asset impairments (Level 3)	$	7.9	$	17.5	$	3.4

IPRD impairments (Level 3)	2.9		1.3		1.6
	$	10.8	$	18.8	$	5.0

Investments, All Other Investments [Abstract]

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Financial Instruments

12 Months Ended

Dec. 31, 2021

Financial Instruments

Note 15: Financial Instruments

Foreign Currencies

As a multinational business, the Company's transactions are denominated in a variety of currencies. When appropriate, the Company uses forward foreign currency contracts to reduce its overall exposure to the effects of currency fluctuations on its results of operations and cash flows. The Company's policy prohibits trading in currencies for which there are no underlying exposures and entering into trades for any currency to intentionally increase the underlying exposure. The Company primarily hedges existing assets and liabilities associated with transactions currently on its balance sheet, which are undesignated hedges for accounting purposes.

As of December 31, 2021 and 2020, the Company had outstanding foreign exchange contracts with notional amounts of $288.3 million and $263.4 million, respectively. Such contracts were obtained through financial institutions and were scheduled to mature within one to three months from the time of purchase. Management believes that these financial instruments should not subject the Company to increased risks from foreign exchange movements because gains and losses on these contracts should offset losses and gains on the underlying assets, liabilities and transactions to which they are related.

The following schedule summarizes the Company's net foreign exchange positions in U.S. dollars (in millions):


	As of December 31,
	2021			2020
	Buy (Sell)		Notional Amount	Buy (Sell)		Notional Amount
Philippine Peso	67.1		67.1	57.2		57.2
Euro	65.9		65.9	47.7		47.7
Korean Won	44.1		44.1	34.4		34.4
Japanese Yen	33.2		33.2	71.2		71.2
Chinese Yuan	15.1		15.1	17.7		17.7
Singapore Dollar	15.7		15.7	5.7		5.7
Czech Koruna	15.0		15.0	—		—


Other currencies - Buy	27.9		27.9	18.4		18.4
Other currencies - Sell	(4.3)		4.3	(11.1)		11.1
	$	279.7	288.3	$	241.2	$	263.4

Amounts receivable or payable under the contracts are included in other current assets or accrued expenses and other current liabilities in the accompanying Consolidated Balance Sheets. For the years ended December 31, 2021, 2020 and 2019, realized and unrealized foreign currency transactions totaled a loss of $0.8 million, $6.2 million and $5.0 million, respectively. The realized and unrealized foreign currency transactions are included in other income (expense) in the Company's Consolidated Statements of Operations and Comprehensive Income.

Cash Flow Hedges

All derivatives are recognized on the balance sheet at their fair value and classified based on each instrument’s maturity date.

Foreign currency risk

The purpose of the Company's foreign currency hedging activities is to protect the Company from the risk that the eventual cash flows resulting from transactions in foreign currencies will be adversely affected by changes in exchange rates. During 2021, the Company entered into an insignificant forward contract that is designated as foreign currency cash flow hedge of forecasted payment denominated in a currency other than U.S. dollars. The Company did not have any outstanding derivatives for its foreign currency exposure designated as cash flow hedges as of December 31, 2020.

See Note 17: ''Changes in Accumulated Other Comprehensive Loss'' for the effective amounts related to derivative instruments designated as cash flow hedges affecting accumulated other comprehensive loss and the Consolidated Statements of Operations and Comprehensive Income for the year ended December 31, 2021.

Interest rate risk

The Company uses interest rate swap contracts to mitigate its exposure to interest rate fluctuations. As of December 31, 2021, the Company had interest rate swap agreements for notional amounts of $750.0 million, $500.0 million and $500.0 million for fiscal years 2022, 2023 and 2024, respectively. The Company did not identify any ineffectiveness with respect to the notional amounts of interest rate swap agreements outstanding as of December 31, 2021 and 2020.

Convertible Note Hedges

The Company entered into convertible note hedges in connection with the issuance of the 0% Notes and 1.625% Notes.

Other

At December 31, 2021, the Company had no outstanding commodity derivatives, currency swaps or options relating to either its debt instruments or investments. The Company does not hedge the value of its equity investments in its subsidiaries or affiliated companies. The Company is exposed to credit-related losses if counterparties to hedge contracts fail to perform their obligations. As of December 31, 2021, the counterparties to the Company's hedge contracts are held at financial institutions

which the Company believes to be highly rated, and no credit related losses are anticipated.

Income Taxes

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Income Taxes

Note 16: Income Taxes

The Company's geographic sources of income (loss) before income taxes and non-controlling interest are as follows (in millions):


	Year ended December 31,
	2021		2020		2019
United States	$	873.2	$	(181.2)	$	(308.2)
Foreign	284.6		357.8		584.8
Income before income taxes	$	1,157.8	$	176.6	$	276.6

The Company's provision (benefit) for income taxes is as follows (in millions):


	Year ended December 31,
	2021		2020		2019
Current:
Federal	$	8.0	$	0.6	$	1.2
State and local	4.8		0.1		—
Foreign	43.3		54.0		48.5
	56.1		54.7		49.7
Deferred:
Federal	89.2		(69.2)		(5.0)
State and local	7.8		(66.4)		—
Foreign	(6.5)		21.1		18.0
	90.5		(114.5)		13.0
Total provision (benefit)	$	146.6	$	(59.8)	$	62.7

A reconciliation of the U.S. federal statutory income tax rate to the Company's effective income tax rate is as follows:


	Year ended December 31,
	2021		2020		2019
U.S. federal statutory rate	21.0	%	21.0	%	21.0	%
Increase (decrease) resulting from:
State and local taxes, net of federal tax benefit	1.4		(1.4)		(2.6)

Impact of foreign operations	(2.0)		7.6		3.8

Foreign derived intangible income benefit	(7.8)		—		—


Impact of the Domestication (1)	—		(35.7)		—
Change in valuation allowance and related effects (2)	(0.4)		(24.4)		1.8


Non-deductible share-based compensation costs	(0.1)		1.7		(0.5)
U.S. federal R&D credit	(0.4)		(3.6)		(3.7)
Non-deductible officer compensation	0.4		1.1		1.5
Other (3)	0.6		(0.1)		1.4
Total	12.7	%	(33.8)	%	22.7	%

_______________________

(1)On July 6, 2020, the Company completed a simplification of its corporate structure by repatriating the economic rights of its non-U.S. IP to the United States via domestication of certain foreign subsidiaries (the "Domestication"). The Domestication more closely aligns the Company's corporate structure with its operating structure in accordance with the OECD’s BEPS conclusions and changes to U.S. and European tax laws. The impact of the Domestication, which is regarded as a change in tax status, resulted in a benefit primarily from recognizing certain deferred tax assets, net of

deferred tax liabilities, of $63.0 million, or 35.7%.

(2)For the year ended December 31, 2021, this included a benefit of $26.3 million, or 2.2% related to a decrease in the valuation allowance for the expiration of Japan net operating losses ("NOLs"), partially netted with an offsetting expense of $22.6 million, or 1.9% related to the expiration of those same Japan NOLs. For the year ended December 31, 2020, this included a benefit of $49.4 million, or 28.0%, for the release of a partial state valuation allowance due to an increase to forecasted domestic income as a result of the Domestication of certain foreign subsidiaries and an expense of $61.8 million, or 35.0%, primarily related to the expiration of Japan NOLs, netted with the offsetting benefit of $61.8 million, or 35.0%, primarily for the decrease in the related valuation allowance for those same Japan NOLs. For the year ended December 31, 2019, this included an expense of $11.2 million, or 4.0%, primarily related to the write-off of Hong Kong NOL and expiration of Japan NOL, netted with the offsetting benefit of $11.2 million, or 4.0%, primarily for the decrease in related valuation allowance for those same Hong Kong and Japan NOLs.

(3)For the year ended December 31, 2021, this included an expense of $8.5 million, or 0.7%, related to an election to waive Base Erosion Anti-Abuse Tax ("BEAT") deductions for all U.S. federal tax purposes for the 2021 tax year.

The Company’s effective tax rate for 2021 was 12.7%, which differs from the U.S. federal income tax rate of 21%, primarily due to the benefit received from Section 250 deduction related to FDII.

The Company’s effective tax rate for 2020 was a benefit of (33.8)%, which differs from the U.S. federal income tax rate of 21%, primarily due to the Domestication of certain foreign subsidiaries and a partial release of state valuation allowance, partially offset by foreign taxes for which the Company will not receive a U.S. tax credit as well as period costs related to the Company's global intangible low-taxed income ("GILTI") inclusion.

The Company’s effective tax rate for 2019 was 22.7%, which differs from the U.S. federal income tax rate of 21%, primarily due to foreign taxes for which the Company will not receive a U.S. tax credit as well as period costs related to the Company's GILTI inclusion.

The FASB allows taxpayers to make an accounting policy election of either treating taxes due on GILTI inclusions as a current-period expense when incurred or recognizing deferred taxes for temporary basis differences that are expected to reverse as GILTI in future years. The company has made a policy choice to include taxes due on future GILTI inclusion as a current-period expense when incurred.

The tax effects of temporary differences in the recognition of income and expense for tax and financial reporting purposes that give rise to significant portions of the net deferred tax asset (liability) are as follows (in millions):


	As of December 31,
	2021		2020
NOL and tax credit carryforwards	$	354.4	$	471.6
163 (j) interest expense carryforward	17.4		65.7
Lease liabilities	50.2		32.5
ROU asset	(49.2)		(32.5)
Tax-deductible goodwill and amortizable intangibles	(57.5)		(38.0)
Capitalization of research and development expenses	185.8		90.7
Reserves and accruals	109.2		68.4
Property, plant and equipment	(110.6)		(95.8)
Inventories	67.9		84.3
Undistributed earnings of foreign subsidiaries	(58.7)		(57.5)
Share-based compensation	7.9		7.7
Pension	15.3		21.2

Other	18.4		3.2
Deferred tax assets and liabilities before valuation allowance	550.5		621.5
Valuation allowance	(227.4)		(249.9)
Net deferred tax asset	$	323.1	$	371.6

As of December 31, 2021 and 2020, the Company had approximately $77.5 million and $99.0 million, respectively, of U.S. federal NOL carryforwards, before the impact of unrecognized tax benefits. The decrease is primarily due to current year utilization, partially offset by NOLs acquired in the GTAT acquisition. A portion of these NOL carryforwards expire at various dates through 2037, if unutilized. NOLs generated after December 31, 2017 are carried forward indefinitely. As of December 31, 2021 and 2020, the Company had approximately $43.6 million and $153.4 million, respectively, of U.S. federal credit carryforwards, before the impact of unrecognized tax benefits. The decrease is primarily due to current year utilization. The credits will expire at various dates through 2041, if unutilized. These NOL carryforwards, and a portion of the credits, relate to acquisitions and, consequently, are limited in the amount that can be utilized in any one year as a result of the ownership change.

As of December 31, 2021 and 2020, the Company had approximately $491.1 million and $741.3 million, respectively, of U.S. state NOL carryforwards, before consideration of valuation allowance or the impact of unrecognized tax benefits. The decrease is primarily due to current year utilization, partially offset by NOLs acquired in the GTAT acquisition. The U.S. state NOL carryforwards will expire at various dates through 2040, if unutilized. As of December 31, 2021 and 2020, the Company had $138.4 million and $141.1 million, respectively, of U.S. state credit carryforwards before consideration of valuation allowance or the impact of unrecognized tax benefits. The U.S. state credits will expire at various dates through 2035, if unutilized.

As of December 31, 2021 and 2020, the Company had approximately $551.8 million and $581.6 million, respectively, of foreign NOL carryforwards, before consideration of valuation allowance. The decrease is primarily due to the expiration of Japan NOLs. As of December 31, 2021 and 2020, the Company had $69.2 million and $69.4 million, respectively, of foreign credit carryforwards before consideration of valuation allowance or the impact of unrecognized tax benefits. A significant portion of the foreign NOLs and credit carryforwards will expire at various dates through 2025, if unutilized.

The Company continues to maintain a valuation allowance of $93.4 million on a portion of its Japan NOLs, which expire at various dates through 2024. In addition to the valuation allowance on the Japan NOLs, the Company maintains a full valuation allowance on NOLs in Hong Kong of $25.5 million. The Company also maintains a partial valuation allowance of $69.7 million on its U.S. state deferred tax assets, primarily NOLs and credits. The remaining valuation allowance relates to NOLs and tax credits in certain other foreign jurisdictions that primarily expire in 2025.

At December 31, 2021, the Company was not indefinitely reinvested with respect to the earnings of its foreign subsidiaries and has therefore accrued withholding taxes that would be owed upon future distributions of such earnings.

The Company maintains liabilities for unrecognized tax benefits. These liabilities involve considerable judgment and estimation and are continuously monitored by management based on the best information available, including changes in tax regulations, the outcome of relevant court cases, and other information. The Company is currently under examination by various taxing authorities. Although the outcome of any tax audit is uncertain, the Company believes that it has adequately provided in its consolidated financial statements for any additional taxes that the Company may be required to pay as a result of such examinations. If the payment ultimately proves not to be necessary, the reversal of these tax liabilities would result in tax benefits being recognized in the period the Company determines such liabilities are no longer necessary. However, if an ultimate tax assessment exceeds the Company's estimate of tax liabilities, additional tax expense will be recorded. The impact of such adjustments could have a material impact on the Company's results of operations in future periods.

The activity for unrecognized gross tax benefits is as follows (in millions):


	2021		2020		2019
Balance at beginning of year	$	151.0	$	130.0	$	112.2
Acquired balances	9.3		—		15.5
Additions for tax benefits related to the current year	3.1		11.9		9.4
Additions for tax benefits of prior years	—		12.3		8.0
Reductions for tax benefits of prior years	(19.7)		(1.4)		(0.2)
Lapse of statute	(2.7)		(1.3)		(8.2)
Settlements	(3.8)		(0.5)		(6.7)

Balance at end of year	$	137.2	$	151.0	$	130.0

Included in the December 31, 2021 balance of $137.2 million is $92.5 million related to unrecognized tax benefits that, if recognized, would affect the annual effective tax rate. Also included in the balance of unrecognized tax benefits as of December 31, 2021 is $44.7 million of benefit that, if recognized, would result in adjustments to other tax accounts, primarily deferred taxes. Although the Company cannot predict the timing of resolution with taxing authorities, if any, the Company believes it is reasonably possible that its unrecognized tax benefits will be reduced by $64.2 million in the next 12 months due to settlement with tax authorities or expiration of the applicable statute of limitations.

The Company recognizes interest and penalties accrued in relation to unrecognized tax benefits in tax expense. The Company recognized approximately $3.3 million of net tax benefit and $0.2 million of tax expense for interest and penalties during the year ended December 31, 2021 and 2020, respectively. The Company did not recognize any additional tax benefit or expense for interest and penalties during the year ended December 31, 2019. The Company had approximately $1.3 million, $5.3 million, and $5.1 million of accrued interest and penalties at December 31, 2021, 2020, and 2019, respectively.

The Company is currently under IRS examination for the 2017 tax year. Tax years prior to 2017 are generally not subject to examination by the IRS. For state tax returns, the Company is generally not subject to income tax examinations for tax years prior to 2017. The Company is also subject to routine examinations by various foreign tax jurisdictions in which it operates. With respect to jurisdictions outside the United States, the Company is generally not subject to examination for tax years prior to 2011. The Company believes that adequate provisions have been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner not consistent with the Company's expectations, the Company could be required to adjust its provision for income taxes in the period such resolution occurs.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 17
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
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-Subparagraph (SAB TOPIC 6.I.5.Q1)
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 270
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 235
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Changes in Accumulated Other Comprehensive Loss

12 Months Ended

Dec. 31, 2021

Changes in Accumulated Other Comprehensive Loss

Note 17: Changes in Accumulated Other Comprehensive Loss

Amounts comprising the Company's accumulated other comprehensive loss and reclassifications are as follows (in millions):


	Currency Translation Adjustments		Effects of Cash Flow Hedges		Total
Balance December 31, 2019	$	(42.4)	$	(11.9)	$	(54.3)
Other comprehensive income prior to reclassifications	1.8		14.9		16.7
Amounts reclassified from accumulated other comprehensive loss	—		(20.0)		(20.0)
Net current period other comprehensive income (loss) (1)	1.8		(5.1)		(3.3)
Balance December 31, 2020	(40.6)		(17.0)		(57.6)
Other comprehensive income (loss) prior to reclassifications	(3.8)		39.9		36.1
Amounts reclassified from accumulated other comprehensive loss	—		(19.1)		(19.1)
Net current period other comprehensive income (loss) (1)	(3.8)		20.8		17.0
Balance December 31, 2021	$	(44.4)	$	3.8	$	(40.6)

_______________________

(1)Effects of cash flow hedges are net of tax expense of $6.1 million and tax benefit of $1.7 million for the years ended December 31, 2021 and 2020, respectively.

Amounts reclassified from accumulated other comprehensive loss to the specific caption within the Consolidated Statements of Operations and Comprehensive Income were as follows:



	Year Ended December 31,		To caption
	2021	2020

Interest rate swaps	$19.1	$20.0	Interest expense
Total reclassifications	$19.1	$20.0

Supplemental Disclosures

12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Elements [Abstract]

Supplemental Disclosures

Note 18: Supplemental Disclosures

Supplemental Disclosure of Cash Flow Information

Certain of the Company's cash and non-cash activities were as follows (in millions):


	Year ended December 31,
	2021		2020		2019
Non-cash investing activities:
Capital expenditures in accounts payable and other long-term liabilities	$	150.7	$	162.5	$	155.3
Divestiture/Sale of property in exchange for note receivable	7.5		7.2		—
Operating ROU assets obtained in exchange of lease liabilities	69.3		58.2		17.5
Finance ROU assets obtained in exchange of lease liabilities	22.3		—		—
Non-cash financing activities:
Liability incurred for purchase of business	$	—	$	—	$	12.7


Cash paid for:

Interest expense	$	96.9	$	109.1	$	97.2
Income taxes	88.2		52.5		62.9
Operating lease payments in operating cash flows	42.1		36.9		37.6

See Note 10: ''Earnings Per Share and Equity'' for shares of common stock issued and acquired for settlement and repurchase of the 1.00% Notes and 1.625% Notes, respectively.

Following is a reconciliation of the captions in the Consolidated Balance Sheets to the Consolidated Statements of Cash Flows (in millions):


	As of December 31,
	2021		2020		2019
Consolidated Balance Sheets:
Cash and cash equivalents	$	1,352.6	$	1,080.7	$	894.2
Restricted cash (included in other current assets)	20.1		0.8		—
Restricted cash (included in other non-current assets)	5.0		—		—
Cash, cash equivalents and restricted cash in Consolidated Statements of Cash Flows	$	1,377.7	$	1,081.5	$	894.2

As of December 31, 2021, $17.0 million of the restricted cash balance was held in escrow relating to the acquisition of GTAT and will be released upon satisfaction of certain outstanding items contained in the Agreement and Plan of Merger relating to such acquisition.

Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2021

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts


Description	Balance at Beginning of Period		Charged (Credited) to Costs and Expenses			Charged to Other Accounts			Deductions/Write-offs			Balance at End of Period





Allowance for deferred tax assets
Year ended December 31, 2019	$	347.5	$	5.0		$	16.6	(3)	$	(11.2)	(4)	$	357.9
Year ended December 31, 2020	357.9		(43.1)		(5)	11.0		(1)	(75.9)		(2)	249.9
Year ended December 31, 2021	249.9		3.3			8.7		(6)	(34.5)		(2)	227.4

_______________________

(1)Primarily represents the effects of cumulative translation adjustments.

(2)Primarily relates to the expiration of Japan net operating losses. See Note 16: ''Income Taxes''

(3)Primarily represents the effects of cumulative translation adjustments and includes $14.0 million of additional allowance for deferred tax assets arising from the Quantenna acquisition.

(4)Primarily relates to the write-off of Hong Kong net operating losses upon the liquidation of Sanyo Semiconductor (H.K.) Co., Ltd. as well as the expiration of Japan net operating losses.

(5)Primarily relates to the release of state valuation as a result of the Domestication of certain foreign subsidiaries. See Note 16: "Income Taxes."

(6)Primarily relates to additional valuation allowance of $22.0 million arising from the GTAT acquisition partially offset by cumulative translation adjustments.

Significant Accounting Policies (Policies)	12 Months Ended
Significant Accounting Policies (Policies)	Dec. 31, 2021
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements include the assets, liabilities, revenue and expenses of all wholly-owned and majority-owned subsidiaries over which the Company exercises control and, when applicable, entities in which the Company has a controlling financial interest or is the primary beneficiary. Investments in affiliates where the Company does not exert a controlling financial interest are not consolidated. All intercompany balances and transactions have been eliminated.
Use of Estimates	Use of Estimates The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the financial statements and the reported amount of revenue and expenses during the reporting period. Management evaluates these estimates and judgments on an ongoing basis and bases its estimates on experience, current and expected future conditions, third-party evaluations and various other assumptions that management believes are reasonable under the circumstances. Significant estimates have been used by management in conjunction with the following: (i) future payouts for customer incentives and amounts subject to allowances and returns; (ii) valuation and obsolescence relating to inventories; (iii) measurement of valuation allowances against deferred tax assets, and evaluations of uncertain tax positions; and (iv) assumptions used in business combinations. Additionally, during periods where it becomes applicable, significant estimates will be used by management in determining the future cash flows used to assess and test for impairment of long-lived assets and goodwill. Actual results may differ from the estimates and assumptions used in the consolidated financial statements.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include cash on hand, demand deposits and highly liquid investments with original maturities at the time of purchase of three months or less. The Company maintains amounts on deposit at various financial institutions, which may at times exceed federally insured limits. However, management periodically evaluates the credit-worthiness of those institutions and has not experienced any losses on such deposits.
Inventories	Inventories Inventories are stated at the lower of standard cost (which approximates actual cost on a first-in, first-out basis) or net realizable value. General market conditions, as well as the Company's design activities, can cause certain of its products to become obsolete. The Company writes down excess and obsolete inventories based upon a regular analysis of inventory on hand compared to historical and projected end-user demand. The determination of projected end-user demand requires the use of estimates and assumptions related to projected unit sales for each product. These write downs can influence results from operations. For example, when demand for a given part falls, all or a portion of the related inventory that is considered to be in excess of anticipated demand is written down, impacting cost of revenue and gross profit. However, the majority of product inventory that has been previously written down is ultimately discarded. Although the Company does sell some products that have previously been written down, such sales have historically been consistently insignificant and the related impact on the Company's gross profit has also been insignificant.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are recorded at cost and are depreciated over estimated useful lives of 30 years for buildings and 3-10 years for computers, machinery and equipment using straight-line methods. Expenditures for maintenance and repairs are charged to operations in the period in which the expense is incurred. When assets are retired or otherwise disposed of, the related costs and accumulated depreciation are removed from the balance sheet and any resulting gain or loss is reflected in operations in the period realized. The Company evaluates the recoverability of the carrying amount of its property, plant and equipment whenever events or changes in circumstances indicate that the carrying value of an asset group may not be fully recoverable. A potential impairment charge is evaluated when the undiscounted expected cash flows derived from an asset group are less than its carrying amount. Impairment losses, if applicable, are measured as the amount by which the carrying value of an asset group exceeds its fair value. Judgment is used when applying these impairment rules to determine the timing of the impairment test, the undiscounted cash flows used to assess impairments and the fair value of the asset group.
Business Combination Purchase Price Allocation	Business Combination Purchase Price AllocationThe allocation of the purchase price of business combinations is based on management estimates and assumptions, which utilize established valuation techniques appropriate for the technology industry. These techniques include the income approach, cost approach or market approach, depending upon which approach is the most appropriate based on the nature and reliability of available data. Management records the acquired assets and liabilities at fair value. If the income approach is used, the fair value determination is predicated upon the value of the future cash flows that an asset is expected to generate over its economic life. The cost approach takes into account the cost to replace (or reproduce) the asset and the effects on the asset's value of physical, functional and/or economic obsolescence that has occurred with respect to the asset. The market approach is used to estimate value from an analysis of actual market transactions or offerings for economically comparable assets available as of the valuation date. Determining the fair value of acquired technology assets is judgmental in nature and requires the use of significant estimates and assumptions, including the discount rate, revenue growth rates, projected gross margins, and estimated research and development and other operating expenses.
Goodwill	Goodwill Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in a business combination. The Company evaluates its goodwill for impairment annually during the fourth quarter and whenever events or changes in circumstances indicate the carrying value of a reporting unit may not be recoverable. The Company’s divisions are one level below the operating segments, constituting individual businesses, at which level the Company’s segment management conducts regular reviews of the operating results. The Company's divisions, either individually or in a combination, constitute reporting units for purposes of allocating and testing goodwill. The Company's impairment evaluation consists of a qualitative assessment. If this assessment indicates that it is more likely than not the estimated fair value of a reporting unit exceeds its carrying value, goodwill is not considered impaired. Otherwise, a quantitative impairment test is performed by comparing the fair value of a reporting unit to its carrying value, including goodwill. The Company can bypass the qualitative assessment for any period and proceed directly to the quantitative impairment test. If the carrying value of the net assets associated with the reporting unit exceeds the fair value of the reporting unit, goodwill is considered impaired and will be determined as the amount by which the reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. Determining the fair value of the Company's reporting units is subjective in nature and involves the use of significant estimates and assumptions, including projected net cash flows, discount rates and long-term growth rates. The Company determines the fair value of its reporting units based on an income approach derived from the present value of estimated future cash flows. The assumptions about estimated cash flows include factors such as future revenue, gross profit, operating expenses and industry trends. The Company considers historical rates and current market conditions when determining the discount and long-term growth rates to use in its analysis. The Company considers other valuation methods, such as the cost approach or market approach, if it is determined that these methods provide a more representative approximation of fair value.
Intangible Assets	Intangible Assets The Company's acquisitions have resulted in intangible assets consisting of values assigned to customer relationships, patents, developed technology, licenses, and trademarks, which are considered long-lived assets and are stated at cost less accumulated amortization. These intangible assets, which are considered long-lived assets are amortized over their estimated useful lives and are reviewed for impairment when events or changes in circumstances indicate that the carrying amount of an asset group containing these assets may not be recoverable.
Leases	Leases The Company determines if an arrangement is a lease at its inception. Operating and financing lease arrangements are comprised primarily of real estate and equipment agreements for which the right-of-use ("ROU") assets are included in other assets and the corresponding lease liabilities, depending on their maturity, are included in accrued expenses and other current liabilities or other long-term liabilities in the Consolidated Balance Sheet. ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. The lease term includes options to extend the lease when it is reasonably certain that the option will be exercised. Leases with a term of 12 months or less are not recorded on the Consolidated Balance Sheet. The Company uses its estimated incremental borrowing rate in determining the present value of lease payments considering the term of the lease, which is derived from information available at the lease commencement date, giving consideration to publicly available data for instruments with similar characteristics. The Company accounts for the lease and non-lease components as a single lease component.
Debt Issuance Costs	Debt Issuance Costs Debt issuance costs for the Company's Revolving Credit Facility are capitalized and amortized over the term of the facility on a straight-line basis. Amortization is included in interest expense while the unamortized balance is included in other assets. Debt issuance costs for the Company's convertible notes, senior notes and term debt are recorded as a direct deduction from the carrying amounts of such debt, consistent with debt discounts, and are amortized over their term using the effective interest method. Amortization is included in interest expense.
Contingencies	ContingenciesThe Company is involved in a variety of legal matters, IP matters, environmental, financing and indemnification contingencies that arise in the ordinary course of business. Based on the information available, management evaluates the relevant range and likelihood of potential outcomes and records the appropriate liability when the amount is deemed probable and reasonably estimable.
Treasury Stock	Treasury Stock Treasury stock is recorded at cost, inclusive of fees, commissions and other expenses, when outstanding common shares are repurchased, bond hedges issued in connection with the convertible notes are settled and when outstanding shares are withheld to satisfy tax withholding obligations in connection with certain shares pursuant to RSUs under the Company's share-based compensation plans. Re-issuance of shares held in treasury stock is accounted for on a first-in, first-out basis.
Revenue Recognition	Revenue Recognition The Company generates revenue from sales of its semiconductor products to direct customers and distributors. The Company also generates revenue, to a much lesser extent, from product development agreements and manufacturing services provided to customers. Revenue is recognized when the Company satisfies a performance obligation in an amount reflecting the consideration to which it expects to be entitled. For sales agreements, the Company has identified the promise to transfer products, each of which is distinct, as the performance obligation. For product development agreements, the Company has identified the completion of a service defined in the agreement as the performance obligation. The Company applies a five-step approach in determining the amount and timing of revenue to be recognized: (1) identifying the contract with a customer; (2) identifying the performance obligations in the contract; (3) determining the transaction price; (4) allocating the transaction price to the performance obligations in the contract; and (5) recognizing revenue when the performance obligation is satisfied. Sales agreements with customers are renewable periodically and contain terms and conditions with respect to payment, delivery, warranty and supply. In the absence of a sales agreement, the Company’s standard terms and conditions apply. The Company considers the customer purchase orders, governed by sales agreements or the Company’s standard terms and conditions, to be the contract with the customer. The Company evaluates certain factors including the customer’s ability to pay (or credit risk). The Company allocates the transaction price to each distinct product based on its relative stand-alone selling price. In determining the transaction price, the Company evaluates whether the price is subject to refund or adjustment to determine the net consideration to which the Company expects to be entitled. The Company’s direct customers do not have the right to return products, other than pursuant to the provisions of the Company’s standard warranty. Sales to distributors, however, are typically made pursuant to agreements that provide return rights and stock rotation provisions permitting limited levels of product returns. Sales to certain distributors, primarily those with ship and credit rights, can also be subject to price adjustment on certain products. Although payment terms vary, most distributor agreements require payment within 30 days. In addition, the Company offers cash discounts to certain customers for payments received within an agreed upon time, generally ten days after shipment, which is recorded as a reduction to revenue. The Company recognizes revenue from sales agreements upon transferring control of a product to the customer, which typically occurs when products are shipped or delivered, depending on the delivery terms, or when products that are consigned at customer locations are consumed. The Company recognizes revenue from product development agreements over time based on the cost-to-cost method. Revenue is also recognized over time for products with no alternative use and an enforceable right to payment as they are manufactured, which represents a contract asset. The Company can receive cash payments from customers in advance of the Company’s performance obligation being satisfied, which represents a contract liability. Contract liabilities are recognized as revenue when the performance obligations are satisfied. Sales returns and allowances, which include ship and credit reserves for distributors, are estimated based on historical claims data and expected future claims. Provisions for discounts and rebates to customers, estimated returns and allowances, ship and credit claims and other adjustments are provided for in the same period the related revenue are recognized, and are netted against revenue. Frequently, the Company receives orders with multiple delivery dates that may extend across reporting periods. Each delivery constitutes an individual performance obligation, which consists of transferring control of the products to the customers based on their stand-alone selling price. The Company invoices the customer for each delivery upon shipment and recognizes revenue in accordance with delivery terms. As scheduled delivery dates are within one year, revenue allocated to future shipments of partially completed contracts are not disclosed. The Company records freight and handling costs associated with outbound freight after control over a product has transferred to a customer as a fulfillment cost and includes it in cost of revenue. Taxes assessed by government authorities on revenue-producing transactions, including value-added and excise taxes, are presented on a net basis (excluded from revenue). The Company generally warrants that products sold to its customers will, at the time of shipment, be free from defects in workmanship and materials and conform to specifications. The Company’s standard warranty extends for a period of two years from the date of delivery, except in the case of image sensor products, which are warrantied for one year from the date of delivery. At the time revenue is recognized, the Company establishes an accrual for estimated warranty expenses associated with its sales and records them as a component of the cost of revenue.
Research and Development Costs	Research and Development Costs Research and development costs are expensed as incurred.
Income Taxes	Income Taxes Income taxes are accounted for using the asset and liability method. Under this method, deferred income tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which these temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is provided for those deferred tax assets for which management cannot conclude that it is more likely than not that such deferred tax assets will be realized. In determining the amount of the valuation allowance, estimated future taxable income, feasible tax planning strategies, future reversals of existing temporary differences and taxable income in prior carryback years, if a carryback is permitted, are considered. If the Company determines it is more likely than not that all or a portion of the remaining deferred tax assets will not be realized, the valuation allowance will be increased with a charge to income tax expense. Conversely, if the Company determines it is more likely than not to be able to utilize all or a portion of the deferred tax assets for which a valuation allowance has been provided, the related portion of the valuation allowance will be recorded as a reduction to income tax expense. The Company recognizes and measures benefits for uncertain tax positions using a two-step approach. The first step is to evaluate the tax position taken or expected to be taken in a tax return by determining if the weight of available evidence indicates that is it more likely than not that the tax positions will be sustained upon audit, including resolution of any related appeals or litigation processes. For tax positions that are more likely than not to be sustained upon audit, the second step is to measure the tax benefit as the largest amount that is more than 50% likely to be realized upon settlement. No tax benefit is recognized for tax positions that are not more likely than not to be sustained. The Company's practice is to recognize interest and/or penalties related to income tax matters in income tax expense. Significant judgment is required to evaluate uncertain tax positions. Evaluations are based upon a number of factors, including changes in facts or circumstances, changes in tax law, correspondence with tax authorities during the course of tax audits and effective settlement of audit issues. Changes in the recognition or measurement of uncertain tax positions could result in significant increases or decreases in income tax expense in the period in which the change is made, which could have a significant impact to the Company's effective tax rate.
Foreign Currencies	Foreign Currencies Most of the Company's foreign subsidiaries conduct business primarily in U.S. dollars and, as a result, utilize the U.S. dollar as their functional currency. For the remeasurement of financial statements of these subsidiaries, assets and liabilities in foreign currencies that are receivable or payable in cash are remeasured at current exchange rates, while inventories and other non-monetary assets in foreign currencies are remeasured at historical rates. Gains and losses resulting from the remeasurement of such financial statements are included in the operating results, as are gains and losses incurred on foreign currency transactions. Some of the Company's Japanese subsidiaries utilize Japanese Yen as their functional currency. The assets and liabilities of these subsidiaries are translated at current exchange rates, while revenue and expenses are translated at the average rates in effect for the period. The related translation gains and losses are included in other comprehensive income or loss within the Consolidated Statements of Operations and Comprehensive Income.
Defined Benefit Pension Plans	Defined Benefit Pension Plans The Company maintains defined benefit pension plans covering certain of its foreign employees. Net periodic pension costs and pension obligations are determined based on actuarial assumptions, including discount rates for plan obligations, assumed rates of return on pension plan assets and assumed rates of compensation increases for employees participating in plans. These assumptions are based upon management's judgment and consultation with actuaries, considering all known trends and uncertainties. The service cost component of the net periodic pension cost is allocated between the cost of revenue, research and development, selling and marketing and general and administrative line items, while the other components are included in other expense in the Consolidated Statements of Operations and Comprehensive Income.
Fair Value Measurement	Fair Value Measurement The Company measures certain of its financial and non-financial assets at fair value by using the fair value hierarchy that prioritizes certain inputs into individual fair value measurement approaches. The fair value hierarchy, which is based on three levels of inputs, of which the first two are considered observable and the third, unobservable. The Company has elected not to carry any of its debt instruments at fair value.
Recent Accounting Pronouncements	Pending Adoption: ASU 2021-10 - Government Assistance (Topic 832) - Disclosures by Business Entities about Government Assistance ("ASU 2021-10") In November 2021, the FASB issued ASU 2021-10, which is aimed at increasing transparency about certain government assistance received by a business entity. The standard requires business entities to make annual disclosures about the nature of the transactions and the related accounting policy used to account for the transactions, the line items and applicable amounts on the balance sheet and income statement that are affected by the transactions, and significant terms and conditions of the transactions, including commitments and contingencies. If an entity omits any required disclosures because it is legally prohibited, it must disclose that fact. ASU 2021-10 is effective for financial statements issued for annual periods beginning after December 15, 2021. The Company expects the standard to be applicable to its financial statements and is currently evaluating and understanding the requirements for drafting applicable disclosures. ASU 2020-06 - Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity ("ASU 2020-06") In August 2020, the FASB issued ASU 2020-06, which simplifies the guidance on the issuer’s accounting for convertible debt instruments by removing the separation models for (1) convertible debt with a cash conversion feature and (2) convertible instruments with a beneficial conversion feature. Entities will not separately present in equity an embedded conversion feature in such debt and will account for a convertible debt instrument wholly as debt, unless certain other conditions are met. Also, ASU 2020-06 requires the application of the if-converted method for the purpose of calculating diluted earnings per share and the treasury stock method will be no longer available. As required, the Company plans to adopt ASU 2020-06 for fiscal 2022 using a modified retrospective approach and expects to record a cumulative effect adjustment of an estimated $66 million to increase opening retained earnings as of January 1, 2022. Due to the adoption of ASU 2020-06, the Company expects interest expense for fiscal 2022 will be lower than for fiscal 2021 by approximately $27 million. At an average stock price of $55, the Company expects an increase of 2.8 million for fiscal 2022 compared to fiscal 2021 in dilutive shares included in diluted weighted-average shares of common stock outstanding for the purpose of calculating diluted earnings per share. These estimates are based on the balance of 1.625% Notes and 0% Notes outstanding as of December 31, 2021.

Revenue and Segment Information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting, Measurement Disclosures [Abstract]

Revenue and Gross Profit from Reportable Segments

Revenue and gross profit for the Company’s operating and reportable segments are as follows (in millions):


	PSG		ASG		ISG		Total
For year ended December 31, 2021:
Revenue from external customers	$	3,439.1	$	2,399.9	$	900.8	$	6,739.8
Segment gross profit	1,318.3		1,055.6		340.4		2,714.3

For year ended December 31, 2020:
Revenue from external customers	$	2,606.1	$	1,910.4	$	738.5	$	5,255.0
Segment gross profit (1)	764.1		714.4		237.3		1,715.8

For year ended December 31, 2019:
Revenue from external customers	$	2,788.3	$	1,972.3	$	757.3	$	5,517.9
Segment gross profit (1)	986.0		712.1		275.5		1,973.6

_______________________

Disaggregation of Revenue

Revenue for the Company's operating and reportable segments disaggregated into geographic locations based on sales billed from the respective country and sales channels are as follows (in millions):


	Year Ended December 31, 2021
	PSG		ASG		ISG		Total
Geographic Location
Singapore	$	1,097.7	$	860.4	$	139.7	$	2,097.8
Hong Kong	1,055.6		572.4		200.6		1,828.6
United Kingdom	606.4		343.7		173.5		1,123.6
United States	432.0		304.7		194.9		931.6
Other	247.4		318.7		192.1		758.2
Total	$	3,439.1	$	2,399.9	$	900.8	$	6,739.8

Sales Channel
Distributors	$	2,443.0	$	1,335.5	$	553.5	$	4,332.0
Direct Customers	996.1		1,064.4		347.3		2,407.8

Total	$	3,439.1	$	2,399.9	$	900.8	$	6,739.8


	Year Ended December 31, 2020
	PSG		ASG		ISG		Total
Geographic Location
Singapore	$	978.0	$	695.0	$	126.5	$	1,799.5
Hong Kong	723.2		410.6		177.8		1,311.6
United Kingdom	395.7		264.5		145.7		805.9
United States	282.8		282.0		163.8		728.6
Other	226.4		258.3		124.7		609.4
Total	$	2,606.1	$	1,910.4	$	738.5	$	5,255.0

Sales Channel
Distributors	$	1,776.4	$	986.4	$	406.8	$	3,169.6
Direct Customers	829.7		924.0		331.7		2,085.4

Total	$	2,606.1	$	1,910.4	$	738.5	$	5,255.0


	Year Ended December 31, 2019
	PSG		ASG		ISG		Total
Geographic Location
Singapore	$	864.7	$	679.7	$	168.7	$	1,713.1
Hong Kong	843.5		436.8		137.0		1,417.3
United Kingdom	467.1		303.5		151.0		921.6
United States	356.3		332.6		121.4		810.3
Other	256.7		219.7		179.2		655.6
Total	$	2,788.3	$	1,972.3	$	757.3	$	5,517.9

Sales Channel
Distributors	$	1,740.6	$	971.5	$	461.0	$	3,173.1
Direct Customers	1,047.7		1,000.8		296.3		2,344.8

Total	$	2,788.3	$	1,972.3	$	757.3	$	5,517.9

Summary of Property, Plant and Equipment by Geographic Location

Property, plant and equipment, net by geographic location, are summarized as follows (in millions):


	As of December 31,
	2021		2020
United States	$	767.1	$	686.6
South Korea	492.8		455.5
Philippines	342.4		386.6
China	216.8		229.6
Czech Republic	214.2		216.1
Japan	198.6		209.3
Malaysia	175.3		190.2

Other	117.1		138.4
	$	2,524.3	$	2,512.3

Schedule of Segments and Product Lines

These segments represent the Company's view of the business and as such are used to evaluate progress of major initiatives and allocation of resources.

PSG

ASG

ISG

Analog products

Actuator Drivers

SiC products

ASIC products

CMOS Image Sensors

Discrete products

Connectivity products

Image Signal Processors

MOSFET products

ECL products

LSI products

Power Module products

Foundry products / services

Single Photon Detectors

Isolation products

Gate Driver products

Sensors

Memory products

LSI products

Gate Driver products

Standard Logic products

WBG products

Acquisitions and Divestitures (Tables)

12 Months Ended

Dec. 31, 2021

Business Combination and Asset Acquisition [Abstract]

Schedule of Purchase Price Allocation

The preliminary allocation of the purchase price of GTAT to the assets acquired and liabilities assumed based on their relative fair values is as follows (in millions):


	Purchase Price Allocation
Cash and cash equivalents	$	8.2

Inventory and other current assets	10.0

Property, plant and equipment	31.9
Goodwill	274.8
Intangible assets - Developed Technology	130.0

Deferred tax assets	13.4
Other non-current assets	7.4
Total assets acquired	475.7

Current liabilities	5.8



Other long-term liabilities	35.0
Total liabilities assumed	40.8
Net assets acquired/purchase price	$	434.9

The following table presents the allocation of the purchase price of Quantenna for the assets acquired and liabilities assumed based on their relative fair values (in millions):


	Purchase Price Allocation
Cash and cash equivalents	$	133.4
Receivables	22.2
Inventories	41.8
Other current assets	4.3
Property, plant and equipment	16.9
Goodwill	726.7
Intangible assets (excluding IPRD)	87.1
IPRD	23.8
Deferred tax assets	29.2
Other non-current assets	12.7
Total assets acquired	1,098.1
Accounts payable	22.6
Other current liabilities	17.5
Deferred tax liabilities	3.3
Other non-current liabilities	15.4
Total liabilities assumed	58.8
Net assets acquired/purchase price	$	1,039.3

Schedule of Pro Forma Information



	Year Ended
	December 31, 2021		December 31, 2020
Revenue	$	6,750.4	$	5,262.5
Net income	972.4		210.3
Net income attributable to ON Semiconductor Corporation	970.8		208.1

The following unaudited pro-forma consolidated results of operations for the years ended December 31, 2019 has been prepared as if the acquisition of Quantenna had occurred on January 1, 2018 and includes adjustments for amortization of intangibles, interest expense from financing, restructuring, and the effect of purchase accounting adjustments including the step-up of inventory (in millions):


	Year Ended
	December 31, 2019
Revenue	$	5,613.2
Net income	218.2
Net income attributable to ON Semiconductor Corporation	216.0

Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Goodwill by Operating Segment

The following table summarizes goodwill by operating and reportable segments (in millions):


	As of December 31, 2021				As of December 31, 2020						As of December 31, 2019
	Goodwill		Accumulated Impairment Losses		Carrying Value		Goodwill		Accumulated Impairment Losses			Carrying Value		Goodwill		Accumulated Impairment Losses		Carrying Value
Operating and Reportable Segments:
ASG	$	1,566.3	$	(418.9)	$	1,147.4	$	1,566.3	$	(418.9)		$	1,147.4	$	1,563.4	$	(418.9)	$	1,144.5
ISG	114.0		—		114.0		114.7		—			114.7		114.4		—		114.4
PSG	708.0		(31.9)		676.1		433.2		(31.9)			401.3		432.2		(31.9)		400.3
Total	$	2,388.3	$	(450.8)	$	1,937.5	$	2,114.2	$	(450.8)		$	1,663.4	$	2,110.0	$	(450.8)	$	1,659.2

Schedule of Change in Goodwill

The following table summarizes the change in goodwill (in millions):


Net balance as of December 31, 2019	$	1,659.2
Addition due to business combination	4.2

Net balance as of December 31, 2020	1,663.4
Addition due to business combination	274.8
Divestiture of a business	(0.7)
Net balance as of December 31, 2021	$	1,937.5

Summary of Intangible Assets, Net

Intangible assets subject to amortization, net, were as follows (in millions):


	As of December 31, 2021
	Original Cost		Accumulated Amortization		Accumulated Impairment Losses		Carrying Value

Customer relationships	$	581.5	$	(436.3)	$	(17.6)	$	127.6

Developed technology	928.1		(600.5)		(2.6)		325.0




Licenses	30.0		(0.3)		—		29.7
Other intangibles	79.1		(62.1)		(15.2)		1.8
Total intangible assets	$	1,618.7	$	(1,099.2)	$	(35.4)	$	484.1


	As of December 31, 2020
	Original Cost		Accumulated Amortization		Accumulated Impairment Losses		Carrying Value

Customer relationships	$	581.5	$	(411.7)	$	(17.6)	$	152.2

Developed technology	794.7		(532.9)		(2.6)		259.2




Licenses	30.0		—		—		30.0
Other intangibles	79.3		(60.6)		(15.2)		3.5
Total intangible assets	$	1,485.5	$	(1,005.2)	$	(35.4)	$	444.9

Summary of Amortization Expense

Amortization expense for the intangible assets is expected to be as follows over the next five years, and thereafter (in millions):



2022	$	85.3
2023	69.2
2024	67.5
2025	55.8
2026	47.7
Thereafter	158.6
Total estimated amortization expense	$	484.1

Restructuring, Asset Impairments and Other Charges, net (Tables)

12 Months Ended

Dec. 31, 2021

Restructuring Charges [Abstract]

Summary of Restructuring, Asset Impairments and Other, Net

Details of restructuring, asset impairments and other charges, net are as follows (in millions):


	Restructuring		Asset Impairments (1)		Other		Total
Year Ended December 31, 2021
2021 Involuntary separation program	65.3		—		—		65.3

Other	2.2		3.3		0.6		6.1
Total	$	67.5	$	3.3	$	0.6	$	71.4
Year Ended December 31, 2020
Voluntary separation program	$	27.5	$	—	$	—	$	27.5
2020 Involuntary separation program	11.8		—		—		11.8
General workforce reduction	12.3		—		—		12.3
Other	—		17.5		(3.9)		13.6
Total	$	51.6	$	17.5	$	(3.9)	$	65.2
Year Ended December 31, 2019
General workforce reduction	$	8.4	$	—	$	—	$	8.4
Post-Quantenna acquisition restructuring	15.7		—		—		15.7
Other	$	0.8	$	3.4	$	0.4	$	4.6
Total	$	24.9	$	3.4	$	0.4	$	28.7

_______________________

Rollforward of Accrued Restructuring Charges

Summary of changes in accrued restructuring charges are as follows (in millions):


	Estimated employee separation charges		Estimated costs to exit		Total
Balance as of December 31, 2019	$	0.1	$	0.1	$	0.2
Charges	51.6		—		51.6
Usage	(45.5)		(0.1)		(45.6)
Balance as of December 31, 2020	$	6.2	$	—	$	6.2
Charges	67.5		—		67.5
Usage	(62.9)		—		(62.9)
Balance as of December 31, 2021	$	10.8	$	—	$	10.8

Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2021

Balance Sheet Related Disclosures [Abstract]

Supplemental Balance Sheet Information

Certain significant amounts included in the Company's Consolidated Balance Sheets consist of the following (in millions):


	As of
	December 31, 2021		December 31, 2020




Inventories:
Raw materials	$	174.2	$	135.7
Work in process	888.9		829.7
Finished goods	316.4		286.0
	$	1,379.5	$	1,251.4






Property, plant and equipment, net:
Land	$	118.5	$	119.7
Buildings	968.5		850.0
Machinery and equipment	4,777.8		4,538.0
Property, plant and equipment, gross	5,864.8		5,507.7
Less: Accumulated depreciation	(3,340.5)		(2,995.4)
	$	2,524.3	$	2,512.3
Accrued expenses:
Accrued payroll and related benefits	$	285.4	$	166.8
Sales related reserves	229.9		233.3



Income taxes payable	23.6		25.5

Other (1)	208.7		144.4
	$	747.6	$	570.0

_______________________

(1)The current portion of operating and financing lease liabilities are included in this amount. See discussion below.

Components of Lease Expense and Lease Liabilities

The components of operating lease expense are as follows (in millions):


	Year Ended
	December 31, 2021		December 31, 2020		December 31, 2019
Operating lease	$	39.7	$	38.2	$	35.0




Variable lease	3.8		4.2		4.0
Short-term lease	2.0		4.1		2.6
Total lease expense	$	45.5	$	46.5	$	41.6

The operating and financing lease liabilities included in the Consolidated Balance Sheets are as follows (in millions):


	As of
	December 31, 2021		December 31, 2020
Operating lease liabilities included in:
Accrued expenses and other current liabilities	$	32.5	$	32.2
Other long-term liabilities	142.4		115.7
Total	$	174.9	$	147.9
Operating ROU assets included in:
Other assets	$	170.1	136.3
Financing lease liabilities included in:
Accrued expenses and other current liabilities	$	12.7	$	—
Other long-term liabilities	10.2		—
Total	$	22.9	$	—
Financing ROU assets included in:
Other assets	$	22.3	—

Reconciliation of the Maturities of Operating Leases

The reconciliation of the maturities of the operating and financing leases to the lease liabilities recorded in the Consolidated Balance Sheet as of December 31, 2021 is as follows (in millions):


	Operating Leases		Finance Leases
2022	$	37.9	$	13.6
2023	31.5		0.7
2024	28.7		0.7
2025	19.6		0.7
2026	12.4		0.8
Thereafter	85.0		15.2
Total lease payments	215.1		31.7
Less: Interest	(40.2)		(8.8)
Total lease liabilities	$	174.9	$	22.9

Reconciliation of the Maturities of Finance Leases

The reconciliation of the maturities of the operating and financing leases to the lease liabilities recorded in the Consolidated Balance Sheet as of December 31, 2021 is as follows (in millions):


	Operating Leases		Finance Leases
2022	$	37.9	$	13.6
2023	31.5		0.7
2024	28.7		0.7
2025	19.6		0.7
2026	12.4		0.8
Thereafter	85.0		15.2
Total lease payments	215.1		31.7
Less: Interest	(40.2)		(8.8)
Total lease liabilities	$	174.9	$	22.9

Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

The Company's long-term debt consists of the following (annualized interest rates, dollars in millions):


	As of
	December 31, 2021		December 31, 2020
Amended Credit Agreement:
Revolving Credit Facility due 2024, interest payable monthly at —% and 1.90%, respectively	$	—	$	700.0
Term Loan "B" Facility due 2026, interest payable monthly at 2.10% and 2.15%, respectively	1,598.2		1,614.5
0% Notes due 2027	805.0		—
3.875% Notes due 2028 (1)	700.0		700.0

1.625% Notes due 2023 (2)	155.1		575.0


Gross long-term debt, including current maturities	3,258.3		3,589.5
Less: Debt discount (3)	(149.0)		(69.7)
Less: Debt issuance costs (4)	(34.7)		(28.5)
Net long-term debt, including current maturities	3,074.6		3,491.3
Less: Current maturities	(160.7)		(531.6)
Net long-term debt	$	2,913.9	$	2,959.7

_______________________

(1)Interest is payable on March 1 and September 1 of each year at 3.875% annually.

(2)Interest is payable on April 15 and October 15 of each year at 1.625% annually.

Schedule of Annual Maturities Relating to Long-Term Debt

Expected maturities of gross long-term debt (including current portion - see section regarding 1.625% Notes below) as of December 31, 2021 are as follows (in millions):


	Expected Maturities
2022	$	171.5
2023	16.3
2024	16.3
2025	16.3
2026	1,532.9
Thereafter	1,505.0
Total	$	3,258.3

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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Earnings Per Share and Equity (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of Net Income Per Share

Net income per share of common stock attributable to ON Semiconductor Corporation is shown below (in millions, except per share data):


	Year ended December 31,
	2021		2020		2019
Net income attributable to ON Semiconductor Corporation	$	1,009.6	$	234.2	$	211.7
Basic weighted-average shares of common stock outstanding	425.7		410.7		410.9
Add: Incremental shares for:
Dilutive effect of share-based awards	2.5		1.9		1.9
Dilutive effect of convertible notes and warrants	15.6		6.2		3.2
Diluted weighted average shares of common stock outstanding	443.8		418.8		416.0

Net income per share of common stock attributable to ON Semiconductor Corporation:
Basic	$	2.37	$	0.57	$	0.52
Diluted	$	2.27	$	0.56	$	0.51

Schedule of Share Repurchase Program

Activity under the Share Repurchase Program is as follows (in millions, except per share data):


	Year ended December 31,
	2021		2020		2019
Number of repurchased shares (1)	—		3.6		7.8

Aggregate purchase price	$	—	$	65.3	$	138.9
Fees, commissions and other expenses	—		0.1		0.1

Total cash used for share repurchases	$	—	$	65.4	$	139.0

Weighted-average purchase price per share (2)	$	—	$	18.08	$	17.89
Available under the Share Repurchase Program	$	1,295.8	$	1,295.8	$	1,361.1

_______________________

(1)None of these shares had been reissued or retired as of December 31, 2021 but may be reissued or retired later.

(2) Exclusive of fees, commission or other expenses

Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Summary of Share-Based Compensation Expense


	Year Ended December 31,
	2021		2020		2019
Cost of revenue	$	15.6	$	11.5	$	10.6
Research and development	24.2		18.2		17.0
Selling and marketing	16.6		12.9		14.8
General and administrative	44.9		25.1		37.0

Share-based compensation expense	101.3		67.7		79.4
Income tax benefit	(21.3)		(14.2)		(16.7)
Share-based compensation expense, net of taxes	$	80.0	$	53.5	$	62.7

Summary of Restricted Stock Units Transactions

A summary of activity of RSUs during the year ended December 31, 2021 is as follows (number of shares in millions):


	Number of Shares	Weighted-Average Grant Date Fair Value
Nonvested shares of RSUs at December 31, 2020	11.3	$	20.73
Granted	2.6	42.45

Released	(3.0)	21.51
Forfeited	(4.7)	22.03
Nonvested shares of RSUs at December 31, 2021	6.2	28.60

Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2021

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Summary of Net Periodic Pension Cost

Following is a summary of the status of the Company's foreign defined benefit pension plans and the net periodic pension cost ($ in millions):


	Year Ended December 31,
	2021			2020			2019
Service cost	$	11.7		$	10.9		$	9.4
Interest cost	4.5			4.7			5.0
Expected return on plan assets	(6.5)			(6.3)			(6.0)

Curtailment gain	(0.4)			(1.6)			—
Actuarial (gains) losses	(21.4)			4.0			15.6
Total net periodic pension (gain) cost	$	(12.1)		$	11.7		$	24.0
Weighted average assumptions
Discount rate used for net periodic pension costs	1.31		%	1.43		%	1.74		%
Discount rate used for pension benefit obligations	1.54		%	1.31		%	1.43		%
Expected return on plan assets	3.04		%	3.06		%	3.23		%
Rate of compensation increase	3.45		%	3.26		%	3.07		%

Summary of Status Of Foreign Pension Plans


	2021		2020
Change in projected benefit obligation (PBO)
Projected benefit obligation at the beginning of the year	$	351.2	$	322.9
Service cost	11.7		10.9
Interest cost	4.5		4.7
Net actuarial (gain) loss	(18.4)		8.1
Benefits paid by plan assets	(15.9)		(8.9)
Benefits paid by the Company	(12.2)		(7.4)
Participant contributions	0.1		—
Curtailments and settlements	(0.4)		(1.6)
Translation and other (gain) loss	(27.0)		22.5
Projected benefit obligation at the end of the year	$	293.6	$	351.2
Accumulated benefit obligation at the end of the year	$	244.5	$	288.3
Change in plan assets
Fair value of plan assets at the beginning of the year	$	209.3	$	190.2



Actual return on plan assets	9.5		10.4
Benefits paid from plan assets	(15.9)		(8.9)
Employer contributions	3.9		4.3

Translation and other gain (loss)	(17.1)		13.3
Fair value of plan assets at the end of the year	$	189.7	$	209.3

	As of December 31,
	2021		2020
Plans with underfunded or non-funded projected benefit obligation
Projected benefit obligation	$	205.2	$	248.7
Fair value of plan assets	86.6		97.7
Plans with underfunded or non-funded accumulated benefit obligation
Accumulated benefit obligation	$	131.6	$	189.4
Fair value of plan assets	58.9		97.7
Amounts recognized in the balance sheet consist of
Non-current assets	$	14.7	$	9.0
Current liabilities	(0.2)		(0.3)
Non-current liabilities	(118.4)		(150.6)
Funded status	$	(103.9)	$	(141.9)

Fair Value Measurement of Plan Assets



	As of December 31, 2021
	Allocation		Total		Level 1		Level 2		Level 3
Asset Category
Cash/Money Markets	2	%	$	3.6	$	3.6	$	—	$	—
Foreign Government/Treasury Securities (1)	9	%	17.2		17.2		—		—
Corporate Bonds, Debentures (2)	17	%	32.5		—		32.5		—
Equity Securities (3)	27	%	52.3		—		52.3		—
Mutual Funds	6	%	10.9		—		10.9		—
Investment and Insurance Contracts (4)	39	%	73.2		—		22.6		50.6
	100	%	$	189.7	$	20.8	$	118.3	$	50.6


	As of December 31, 2020
	Allocation		Total		Level 1		Level 2		Level 3
Asset Category
Cash/Money Markets	2	%	$	4.1	$	4.1	$	—	$	—
Foreign Government/Treasury Securities (1)	10	%	21.4		21.4		—		—
Corporate Bonds, Debentures (2)	18	%	36.9		—		36.9		—
Equity Securities (3)	23	%	48.5		—		48.5		—
Mutual Funds	5	%	9.5		—		9.5		—
Investment and Insurance Contracts (4)	42	%	88.9		—		31.4		57.5
	100	%	$	209.3	$	25.5	$	126.3	$	57.5

_______________________

(1)Includes investments primarily in guaranteed return securities.

(2) Includes investments in government bonds and corporate bonds of developed countries, emerging market government bonds, emerging market corporate bonds and convertible bonds.

(3) Includes investments in equity securities of developed countries and emerging markets.

(4) Includes certain investments with insurance companies that guarantee a minimum rate of return on the investment.

Activity of Plan Assets With Fair Value Measurement Using Significant Unobservable Inputs

Activity during the years ended December 31, 2021 and 2020, respectively, for plan assets with fair value measurement using significant unobservable inputs (Level 3) were as follows (in millions):


	Investment and Insurance Contracts
Balance at December 31, 2019	$	52.0
Actual return on plan assets	0.8
Purchase, sales and settlements, net	(0.3)
Foreign currency impact	5.0
Balance at December 31, 2020	$	57.5
Actual return on plan assets	(0.8)
Purchase, sales and settlements, net	(2.1)
Foreign currency impact	(4.0)
Balance at December 31, 2021	$	50.6

Expected Benefit Payments

The expected benefit payments from the Company's defined benefit plans from 2022 through 2026 and the five years thereafter are as follows (in millions):


2022	$	8.9
2023	10.1
2024	12.1
2025	14.5
2026	15.3
Five years thereafter	101.7
Total	$	162.6

Commitment and Contingencies (Tables)

12 Months Ended

Dec. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Purchase Obligations

The following is a schedule by year of future minimum purchase obligations under non-cancelable arrangements entered into during the ordinary course of business as of December 31, 2021 (in millions):



Year Ending December 31,
2022 (1)	$	1,292.6
2023	326.8
2024	256.5
2025	4.9
2026	2.8
Thereafter	8.1
Total	$	1,891.7

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Summary of Fair Value Available-for-sale Securities

The following table summarizes the Company's financial assets and liabilities, excluding pension assets, disaggregated by the security type, measured at fair value on a recurring basis (in millions):


As of
December 31, 2021									Fair Value Level
Description	Amortized Cost		Unrealized gains		Unrealized losses		Fair value		Level 1		Level 2
Assets:
Cash and cash equivalents:
Demand and time deposits	$	19.5	$	—	$	—	$	19.5	$	19.5	$	—
Money market funds	0.7		—		—		0.7		0.7		—
Corporate bonds	1.6		—		—		1.6		—		1.6
Commercial paper	2.0		—		—		2.0		—		2.0

Other current assets:
Corporate bonds	$	16.0	$	—	$	—	$	16.0	$	—	$	16.0
Certificate of deposit	1.9		—		—		1.9		—		1.9
Commercial paper	5.0		—		—		5.0		3.0		2.0
US Treasury bonds	0.4		—		—		0.4		—		0.4

Other assets:
Corporate bonds	$	19.7	$	—	$	—	$	19.7	$	—	$	19.7

US Treasury bonds	1.6		—		—		1.6		—		1.6

The investments included in other assets have maturity dates ranging between one and five years.


As of
December 31, 2020									Fair Value Level
Description	Amortized Cost		Unrealized gains		Unrealized losses		Fair value		Level 1		Level 2
Assets:
Cash and cash equivalents:
Demand and time deposits	$	8.5	$	—	$	—	$	8.5	$	8.5	$	—

Fair Value, by Balance Sheet Grouping

The carrying amounts and fair value of the Company’s long-term borrowings are as follows (in millions):


	As of December 31,
	2021				2020
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current portion (1)
Convertible notes	$	809.4	$	1,696.7	$	515.6	$	967.1
Long-term debt	2,265.2		2,245.5		2,975.7		2,966.8

_______________________

(1)Long-term debt is carried on the Consolidated Balance Sheets at historical cost net of debt discount and issuance costs.

Fair Value Measurements, Nonrecurring

The following table shows the adjustments to fair value of certain of the Company's non-financial assets that had an impact on the Company's results of operations (in millions):


	Year Ended December 31,
	2021		2020		2019
Nonrecurring fair value measurements
Asset impairments (Level 3)	$	7.9	$	17.5	$	3.4

IPRD impairments (Level 3)	2.9		1.3		1.6
	$	10.8	$	18.8	$	5.0

Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2021

Investments, All Other Investments [Abstract]

Schedule of Net Foreign Exchange Positions

The following schedule summarizes the Company's net foreign exchange positions in U.S. dollars (in millions):


	As of December 31,
	2021			2020
	Buy (Sell)		Notional Amount	Buy (Sell)		Notional Amount
Philippine Peso	67.1		67.1	57.2		57.2
Euro	65.9		65.9	47.7		47.7
Korean Won	44.1		44.1	34.4		34.4
Japanese Yen	33.2		33.2	71.2		71.2
Chinese Yuan	15.1		15.1	17.7		17.7
Singapore Dollar	15.7		15.7	5.7		5.7
Czech Koruna	15.0		15.0	—		—


Other currencies - Buy	27.9		27.9	18.4		18.4
Other currencies - Sell	(4.3)		4.3	(11.1)		11.1
	$	279.7	288.3	$	241.2	$	263.4

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Income (Loss) Before Income Taxes And Minority Interests

The Company's geographic sources of income (loss) before income taxes and non-controlling interest are as follows (in millions):


	Year ended December 31,
	2021		2020		2019
United States	$	873.2	$	(181.2)	$	(308.2)
Foreign	284.6		357.8		584.8
Income before income taxes	$	1,157.8	$	176.6	$	276.6

Provision (Benefit) For Income Taxes

The Company's provision (benefit) for income taxes is as follows (in millions):


	Year ended December 31,
	2021		2020		2019
Current:
Federal	$	8.0	$	0.6	$	1.2
State and local	4.8		0.1		—
Foreign	43.3		54.0		48.5
	56.1		54.7		49.7
Deferred:
Federal	89.2		(69.2)		(5.0)
State and local	7.8		(66.4)		—
Foreign	(6.5)		21.1		18.0
	90.5		(114.5)		13.0
Total provision (benefit)	$	146.6	$	(59.8)	$	62.7

Reconciliation Of The U.S. Federal Statutory Income Tax Rate

A reconciliation of the U.S. federal statutory income tax rate to the Company's effective income tax rate is as follows:


	Year ended December 31,
	2021		2020		2019
U.S. federal statutory rate	21.0	%	21.0	%	21.0	%
Increase (decrease) resulting from:
State and local taxes, net of federal tax benefit	1.4		(1.4)		(2.6)

Impact of foreign operations	(2.0)		7.6		3.8

Foreign derived intangible income benefit	(7.8)		—		—


Impact of the Domestication (1)	—		(35.7)		—
Change in valuation allowance and related effects (2)	(0.4)		(24.4)		1.8


Non-deductible share-based compensation costs	(0.1)		1.7		(0.5)
U.S. federal R&D credit	(0.4)		(3.6)		(3.7)
Non-deductible officer compensation	0.4		1.1		1.5
Other (3)	0.6		(0.1)		1.4
Total	12.7	%	(33.8)	%	22.7	%

_______________________

deferred tax liabilities, of $63.0 million, or 35.7%.

Tax Effects Of Temporary Differences


	As of December 31,
	2021		2020
NOL and tax credit carryforwards	$	354.4	$	471.6
163 (j) interest expense carryforward	17.4		65.7
Lease liabilities	50.2		32.5
ROU asset	(49.2)		(32.5)
Tax-deductible goodwill and amortizable intangibles	(57.5)		(38.0)
Capitalization of research and development expenses	185.8		90.7
Reserves and accruals	109.2		68.4
Property, plant and equipment	(110.6)		(95.8)
Inventories	67.9		84.3
Undistributed earnings of foreign subsidiaries	(58.7)		(57.5)
Share-based compensation	7.9		7.7
Pension	15.3		21.2

Other	18.4		3.2
Deferred tax assets and liabilities before valuation allowance	550.5		621.5
Valuation allowance	(227.4)		(249.9)
Net deferred tax asset	$	323.1	$	371.6

Activity For Unrecognized Gross Tax Benefits

The activity for unrecognized gross tax benefits is as follows (in millions):


	2021		2020		2019
Balance at beginning of year	$	151.0	$	130.0	$	112.2
Acquired balances	9.3		—		15.5
Additions for tax benefits related to the current year	3.1		11.9		9.4
Additions for tax benefits of prior years	—		12.3		8.0
Reductions for tax benefits of prior years	(19.7)		(1.4)		(0.2)
Lapse of statute	(2.7)		(1.3)		(8.2)
Settlements	(3.8)		(0.5)		(6.7)

Balance at end of year	$	137.2	$	151.0	$	130.0

Changes in Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of Accumulated Other Comprehensive Loss

Amounts comprising the Company's accumulated other comprehensive loss and reclassifications are as follows (in millions):


	Currency Translation Adjustments		Effects of Cash Flow Hedges		Total
Balance December 31, 2019	$	(42.4)	$	(11.9)	$	(54.3)
Other comprehensive income prior to reclassifications	1.8		14.9		16.7
Amounts reclassified from accumulated other comprehensive loss	—		(20.0)		(20.0)
Net current period other comprehensive income (loss) (1)	1.8		(5.1)		(3.3)
Balance December 31, 2020	(40.6)		(17.0)		(57.6)
Other comprehensive income (loss) prior to reclassifications	(3.8)		39.9		36.1
Amounts reclassified from accumulated other comprehensive loss	—		(19.1)		(19.1)
Net current period other comprehensive income (loss) (1)	(3.8)		20.8		17.0
Balance December 31, 2021	$	(44.4)	$	3.8	$	(40.6)

_______________________

(1)Effects of cash flow hedges are net of tax expense of $6.1 million and tax benefit of $1.7 million for the years ended December 31, 2021 and 2020, respectively.

Schedule of Reclassifications from Accumulated Other Comprehensive Loss

Amounts reclassified from accumulated other comprehensive loss to the specific caption within the Consolidated Statements of Operations and Comprehensive Income were as follows:



	Year Ended December 31,		To caption
	2021	2020

Interest rate swaps	$19.1	$20.0	Interest expense
Total reclassifications	$19.1	$20.0

Supplemental Disclosures (Tables)

12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

Certain of the Company's cash and non-cash activities were as follows (in millions):


	Year ended December 31,
	2021		2020		2019
Non-cash investing activities:
Capital expenditures in accounts payable and other long-term liabilities	$	150.7	$	162.5	$	155.3
Divestiture/Sale of property in exchange for note receivable	7.5		7.2		—
Operating ROU assets obtained in exchange of lease liabilities	69.3		58.2		17.5
Finance ROU assets obtained in exchange of lease liabilities	22.3		—		—
Non-cash financing activities:
Liability incurred for purchase of business	$	—	$	—	$	12.7


Cash paid for:

Interest expense	$	96.9	$	109.1	$	97.2
Income taxes	88.2		52.5		62.9
Operating lease payments in operating cash flows	42.1		36.9		37.6

Schedule of Cash and Cash Equivalents

Following is a reconciliation of the captions in the Consolidated Balance Sheets to the Consolidated Statements of Cash Flows (in millions):


	As of December 31,
	2021		2020		2019
Consolidated Balance Sheets:
Cash and cash equivalents	$	1,352.6	$	1,080.7	$	894.2
Restricted cash (included in other current assets)	20.1		0.8		—
Restricted cash (included in other non-current assets)	5.0		—		—
Cash, cash equivalents and restricted cash in Consolidated Statements of Cash Flows	$	1,377.7	$	1,081.5	$	894.2

Schedule of Restrictions on Cash and Cash Equivalents

Following is a reconciliation of the captions in the Consolidated Balance Sheets to the Consolidated Statements of Cash Flows (in millions):


	As of December 31,
	2021		2020		2019
Consolidated Balance Sheets:
Cash and cash equivalents	$	1,352.6	$	1,080.7	$	894.2
Restricted cash (included in other current assets)	20.1		0.8		—
Restricted cash (included in other non-current assets)	5.0		—		—
Cash, cash equivalents and restricted cash in Consolidated Statements of Cash Flows	$	1,377.7	$	1,081.5	$	894.2

Background and Basis of Presentation (Details)	12 Months Ended
Background and Basis of Presentation (Details)	Dec. 31, 2021 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments	3
Number of reportable segments	3

Significant Accounting Policies (Details)	12 Months Ended
Significant Accounting Policies (Details)	Dec. 31, 2021
Significant Accounting Policies [Line Items]
Payment terms	30 days
Payment period to receive cash discount	10 days
Standard product warranty, period from the date of delivery	2 years
ISG
Significant Accounting Policies [Line Items]
Standard product warranty, period from the date of delivery	1 year
Minimum \| Buildings
Significant Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment (in years)	30 years
Minimum \| Computers, machinery and equipment
Significant Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment (in years)	3 years
Maximum \| Computers, machinery and equipment
Significant Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment (in years)	10 years

Revenue and Segment Information - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Revenue	$ 6,739.8	$ 5,255.0	$ 5,517.9
Number of operating segments \| segment	3
Number of reportable segments \| segment	3
One Customer \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percentage	13.00%	11.00%
Product
Segment Reporting Information [Line Items]
Revenue	$ 6,719.9	$ 5,227.8	5,492.0
Product development agreements
Segment Reporting Information [Line Items]
Revenue	19.9	$ 27.2	$ 25.9
Long Term Supply Arrangement
Segment Reporting Information [Line Items]
Contract liability	57.1
Contract receivable	11.5
Current contract liability	25.8
Noncurrent contract liability	$ 30.0

Revenue and Segment Information - Remaining Performance Obligation (Details) $ in Billions	Dec. 31, 2021 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue remaining performance obligation, amount	$ 8.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue remaining performance obligation, percentage	25.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months

Revenue and Segment Information - Segment Information Of Revenues, Gross Profit And Operating Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenue from external customers	$ 6,739.8	$ 5,255.0	$ 5,517.9
Segment gross profit	2,714.3	1,715.8	1,973.6
PSG
Segment Reporting Information [Line Items]
Revenue from external customers	3,439.1	2,606.1	2,788.3
Segment gross profit	1,318.3	764.1	986.0
ASG
Segment Reporting Information [Line Items]
Revenue from external customers	2,399.9	1,910.4	1,972.3
Segment gross profit	1,055.6	714.4	712.1
ISG
Segment Reporting Information [Line Items]
Revenue from external customers	900.8	738.5	757.3
Segment gross profit	$ 340.4	$ 237.3	$ 275.5

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Revenue and Segment Information - Revenues by Geographic Location Including Local Sales and Exports (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenue from external customers	$ 6,739.8	$ 5,255.0	$ 5,517.9
Distributors
Segment Reporting Information [Line Items]
Revenue from external customers	4,332.0	3,169.6	3,173.1
Direct Customers
Segment Reporting Information [Line Items]
Revenue from external customers	2,407.8	2,085.4	2,344.8
Singapore
Segment Reporting Information [Line Items]
Revenue from external customers	2,097.8	1,799.5	1,713.1
Hong Kong
Segment Reporting Information [Line Items]
Revenue from external customers	1,828.6	1,311.6	1,417.3
United Kingdom
Segment Reporting Information [Line Items]
Revenue from external customers	1,123.6	805.9	921.6
United States
Segment Reporting Information [Line Items]
Revenue from external customers	931.6	728.6	810.3
Other
Segment Reporting Information [Line Items]
Revenue from external customers	758.2	609.4	655.6
PSG
Segment Reporting Information [Line Items]
Revenue from external customers	3,439.1	2,606.1	2,788.3
PSG \| Distributors
Segment Reporting Information [Line Items]
Revenue from external customers	2,443.0	1,776.4	1,740.6
PSG \| Direct Customers
Segment Reporting Information [Line Items]
Revenue from external customers	996.1	829.7	1,047.7
PSG \| Singapore
Segment Reporting Information [Line Items]
Revenue from external customers	1,097.7	978.0	864.7
PSG \| Hong Kong
Segment Reporting Information [Line Items]
Revenue from external customers	1,055.6	723.2	843.5
PSG \| United Kingdom
Segment Reporting Information [Line Items]
Revenue from external customers	606.4	395.7	467.1
PSG \| United States
Segment Reporting Information [Line Items]
Revenue from external customers	432.0	282.8	356.3
PSG \| Other
Segment Reporting Information [Line Items]
Revenue from external customers	247.4	226.4	256.7
ASG
Segment Reporting Information [Line Items]
Revenue from external customers	2,399.9	1,910.4	1,972.3
ASG \| Distributors
Segment Reporting Information [Line Items]
Revenue from external customers	1,335.5	986.4	971.5
ASG \| Direct Customers
Segment Reporting Information [Line Items]
Revenue from external customers	1,064.4	924.0	1,000.8
ASG \| Singapore
Segment Reporting Information [Line Items]
Revenue from external customers	860.4	695.0	679.7
ASG \| Hong Kong
Segment Reporting Information [Line Items]
Revenue from external customers	572.4	410.6	436.8
ASG \| United Kingdom
Segment Reporting Information [Line Items]
Revenue from external customers	343.7	264.5	303.5
ASG \| United States
Segment Reporting Information [Line Items]
Revenue from external customers	304.7	282.0	332.6
ASG \| Other
Segment Reporting Information [Line Items]
Revenue from external customers	318.7	258.3	219.7
ISG
Segment Reporting Information [Line Items]
Revenue from external customers	900.8	738.5	757.3
ISG \| Distributors
Segment Reporting Information [Line Items]
Revenue from external customers	553.5	406.8	461.0
ISG \| Direct Customers
Segment Reporting Information [Line Items]
Revenue from external customers	347.3	331.7	296.3
ISG \| Singapore
Segment Reporting Information [Line Items]
Revenue from external customers	139.7	126.5	168.7
ISG \| Hong Kong
Segment Reporting Information [Line Items]
Revenue from external customers	200.6	177.8	137.0
ISG \| United Kingdom
Segment Reporting Information [Line Items]
Revenue from external customers	173.5	145.7	151.0
ISG \| United States
Segment Reporting Information [Line Items]
Revenue from external customers	194.9	163.8	121.4
ISG \| Other
Segment Reporting Information [Line Items]
Revenue from external customers	$ 192.1	$ 124.7	$ 179.2

Revenue and Segment Information - Summary of Property, Plant and Equipment by Geographic Location (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 2,524.3	$ 2,512.3
United States
Segment Reporting Information [Line Items]
Property, plant and equipment, net	767.1	686.6
South Korea
Segment Reporting Information [Line Items]
Property, plant and equipment, net	492.8	455.5
Philippines
Segment Reporting Information [Line Items]
Property, plant and equipment, net	342.4	386.6
China
Segment Reporting Information [Line Items]
Property, plant and equipment, net	216.8	229.6
Czech Republic
Segment Reporting Information [Line Items]
Property, plant and equipment, net	214.2	216.1
Japan
Segment Reporting Information [Line Items]
Property, plant and equipment, net	198.6	209.3
Malaysia
Segment Reporting Information [Line Items]
Property, plant and equipment, net	175.3	190.2
Other
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 117.1	$ 138.4

Recent Accounting Pronouncements (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2022	Dec. 14, 2021	May 19, 2021	May 11, 2021	May 10, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment		$ 2,435.1	$ 1,425.5
Dilutive effect of convertible notes and warrants (in shares)		15.6	6.2	3.2
Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Average stock price (in dollars per share)	$ 55
Cumulative Effect, Period of Adoption, Adjustment \| Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment					$ 66.0
Change in interest expense	$ 27.0
Dilutive effect of convertible notes and warrants (in shares)	2.8
1.625% Notes \| Convertible Debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt instrument, interest rate (as a percent)		1.625%	1.625%			1.625%	1.625%	1.625%	1.625%
0% Notes \| Convertible Debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt instrument, interest rate (as a percent)		0.00%

Acquisitions and Divestitures - 2021 GTAT Acquisition (Details) - USD ($) $ in Millions		12 Months Ended
	Oct. 28, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Acquisition and divestiture related costs		$ 11.9	$ 1.0	$ 11.3
Goodwill		$ 1,937.5	$ 1,663.4	$ 1,659.2
GT Advanced Technologies Inc
Business Acquisition [Line Items]
Purchase price	$ 434.9
Cash consideration	424.6
Escrow deposit	17.0
Remaining consideration	10.0
Goodwill	274.8
GT Advanced Technologies Inc \| Developed technology
Business Acquisition [Line Items]
Intangible assets acquired	$ 130.0
GT Advanced Technologies Inc \| Developed technology \| Maximum
Business Acquisition [Line Items]
Weighted average useful life (in years)		13 years

Acquisitions and Divestitures - GTAT Purchase Price Allocation (Details) - USD ($) $ in Millions	Dec. 31, 2021	Oct. 28, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill	$ 1,937.5		$ 1,663.4	$ 1,659.2
GT Advanced Technologies Inc
Business Acquisition [Line Items]
Cash and cash equivalents		$ 8.2
Inventory and other current assets		10.0
Property, plant and equipment		31.9
Goodwill		274.8
Intangible assets - Developed Technology		130.0
Deferred tax assets		13.4
Other non-current assets		7.4
Total assets acquired		475.7
Current liabilities		5.8
Other long-term liabilities		35.0
Total liabilities assumed		40.8
Net assets acquired/purchase price		$ 434.9

Acquisitions and Divestitures - Pro Forma Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Quantenna
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenue			$ 5,613.2
Net income			218.2
Net income attributable to ON Semiconductor Corporation			$ 216.0
GT Advanced Technologies Inc
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenue	$ 6,750.4	$ 5,262.5
Net income	972.4	210.3
Net income attributable to ON Semiconductor Corporation	$ 970.8	$ 208.1

Acquisitions and Divestitures - 2021 Divestiture (Details) $ in Millions		12 Months Ended
	Oct. 01, 2021 USD ($) business	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Business Acquisition [Line Items]
Gain on divestiture of business		$ 10.2	$ 0.0	$ 0.0
Discontinued Operations, Disposed of by Sale
Business Acquisition [Line Items]
Number of business divested \| business	1
Cash consideration received	$ 13.6
Gain on divestiture of business	$ 10.2

Acquisitions and Divestitures - 2019 Acquisition and Pending Acquisition (Details) - USD ($) $ in Millions		12 Months Ended		24 Months Ended
	Jun. 19, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2021
Business Acquisition [Line Items]
Non-refundable deposit				$ 170.0
Goodwill		$ 1,663.4	$ 1,659.2	$ 1,663.4	$ 1,937.5
GFUS
Business Acquisition [Line Items]
Purchase price consideration		400.0	400.0
Non-refundable deposit		$ 100.0	70.0
License fee			$ 30.0
Quantenna
Business Acquisition [Line Items]
Purchase price consideration	$ 1,039.3
Percent of shares acquired	100.00%
Proceeds from lines of credit	$ 900.0
Intangible assets acquired	110.9
Developed technology	$ 58.3
Discount rate	12.00%
Goodwill	$ 726.7
Developed technology \| Quantenna
Business Acquisition [Line Items]
Weighted average useful life (in years)	8 years
Intangible Assets, Amortization Period \| Quantenna
Business Acquisition [Line Items]
Weighted average useful life (in years)	8 years

Acquisitions and Divestitures - Quantenna Purchase Price Allocation (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jun. 19, 2019
Business Acquisition [Line Items]
Goodwill	$ 1,937.5	$ 1,663.4	$ 1,659.2
Quantenna
Business Acquisition [Line Items]
Cash and cash equivalents				$ 133.4
Receivables				22.2
Inventories				41.8
Other current assets				4.3
Property, plant and equipment				16.9
Goodwill				726.7
Intangible assets (excluding IPRD)				87.1
IPRD				23.8
Deferred tax assets				29.2
Other non-current assets				12.7
Total assets acquired				1,098.1
Accounts payable				22.6
Other current liabilities				17.5
Deferred tax liabilities				3.3
Other non-current liabilities				15.4
Total liabilities assumed				58.8
Net assets acquired/purchase price				$ 1,039.3

Goodwill and Intangible Assets - Summary of Goodwill by Operating Segment (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill	$ 2,388.3	$ 2,114.2	$ 2,110.0
Accumulated Impairment Losses	(450.8)	(450.8)	(450.8)
Carrying Value	1,937.5	1,663.4	1,659.2
ASG
Goodwill [Line Items]
Goodwill	1,566.3	1,566.3	1,563.4
Accumulated Impairment Losses	(418.9)	(418.9)	(418.9)
Carrying Value	1,147.4	1,147.4	1,144.5
ISG
Goodwill [Line Items]
Goodwill	114.0	114.7	114.4
Accumulated Impairment Losses	0.0	0.0	0.0
Carrying Value	114.0	114.7	114.4
PSG
Goodwill [Line Items]
Goodwill	708.0	433.2	432.2
Accumulated Impairment Losses	(31.9)	(31.9)	(31.9)
Carrying Value	$ 676.1	$ 401.3	$ 400.3

Goodwill and Intangible Assets - Summary of Change in Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,663.4	$ 1,659.2
Addition due to business combination	274.8	4.2
Divestiture of a business	(0.7)
Goodwill, ending balance	$ 1,937.5	$ 1,663.4

Goodwill and Intangible Assets - Summary of Intangible Assets, Net (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Carrying Value	$ 495.7	$ 469.0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Original Cost	581.5	581.5
Accumulated Amortization	(436.3)	(411.7)
Accumulated Impairment Losses	(17.6)	(17.6)
Carrying Value	127.6	152.2
Developed technology
Finite-Lived Intangible Assets [Line Items]
Original Cost	928.1	794.7
Accumulated Amortization	(600.5)	(532.9)
Accumulated Impairment Losses	(2.6)	(2.6)
Carrying Value	325.0	259.2
Licenses
Finite-Lived Intangible Assets [Line Items]
Original Cost	30.0	30.0
Accumulated Amortization	(0.3)	0.0
Accumulated Impairment Losses	0.0	0.0
Carrying Value	29.7	30.0
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Original Cost	79.1	79.3
Accumulated Amortization	(62.1)	(60.6)
Accumulated Impairment Losses	(15.2)	(15.2)
Carrying Value	1.8	3.5
Finite Lived Intangible Assets Excluding In Process Research And Development
Finite-Lived Intangible Assets [Line Items]
Original Cost	1,618.7	1,485.5
Accumulated Amortization	(1,099.2)	(1,005.2)
Accumulated Impairment Losses	(35.4)	(35.4)
Carrying Value	$ 484.1	$ 444.9

Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 495.7	$ 469.0
IPRD
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	11.6	24.1
IPRD projects reclassified to developed technology	9.6	$ 15.2
Impairment of intangible assets	$ 2.9

Goodwill and Intangible Assets - Summary of Amortization Expense (Details) $ in Millions	Dec. 31, 2021 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2022	$ 85.3
2023	69.2
2024	67.5
2025	55.8
2026	47.7
Thereafter	158.6
Total estimated amortization expense	$ 484.1

Restructuring, Asset Impairments and Other Charges, net - Summary of Restructuring, Asset Impairments and Other, Net (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Apr. 03, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring		$ 67.5	$ 51.6	$ 24.9
Asset Impairments		3.3	17.5	3.4
Other		0.6	(3.9)	0.4
Total		71.4	65.2	28.7
Property, plant and equipment impairment			9.1
Impairment of investments in subsidiaries			7.0
Impairment charges for ROU assets			1.4
Other
Restructuring Cost and Reserve [Line Items]
Restructuring		2.2	0.0	0.8
Asset Impairments		3.3	17.5	3.4
Other		0.6	(3.9)	0.4
Total		6.1	13.6	4.6
Involuntary separation program \| Workforce Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring		65.3	11.8
Asset Impairments		0.0	0.0
Other		0.0	0.0
Total		$ 65.3	11.8
General workforce reduction \| Workforce Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring			12.3	8.4
Asset Impairments			0.0	0.0
Other			0.0	0.0
Total			12.3	8.4
Voluntary separation program \| Workforce Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring			27.5
Asset Impairments			0.0
Other			0.0
Total	$ 27.5		$ 27.5
Post-Quantenna acquisition restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring				15.7
Asset Impairments				0.0
Other				0.0
Total				$ 15.7

Restructuring, Asset Impairments and Other Charges, net - Rollforward of Accrued Restructuring Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period	$ 6.2	$ 0.2
Charges	67.5	51.6
Usage	(62.9)	(45.6)
Balance at End of Period	10.8	6.2
Estimated employee separation charges
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period	6.2	0.1
Charges	67.5	51.6
Usage	(62.9)	(45.5)
Balance at End of Period	10.8	6.2
Estimated costs to exit
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period	0.0	0.1
Charges	0.0	0.0
Usage	0.0	(0.1)
Balance at End of Period	$ 0.0	$ 0.0

Restructuring, Asset Impairments and Other Charges, net - Narrative (Details) $ in Millions		3 Months Ended		12 Months Ended
	Jun. 28, 2019 employee	Jul. 03, 2020 USD ($) employee	Apr. 03, 2020 USD ($) employee	Dec. 31, 2021 USD ($) employee	Dec. 31, 2020 USD ($) employee	Dec. 31, 2019 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Restructuring costs				$ 67.5	$ 51.6	$ 24.9
Accrued liabilities				10.8	6.2	0.2
Restructuring, asset impairments and other charges, net				71.4	65.2	28.7
Charges				$ 67.5	51.6
Involuntary separation program
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated \| employee		191		960
Accrued liabilities				$ 9.8
Severance Costs		$ 11.8
Involuntary separation program \| Workforce Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring costs				65.3	11.8
Restructuring, asset impairments and other charges, net				$ 65.3	11.8
Voluntary separation program \| Workforce Reduction
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated \| employee			243
Restructuring costs					27.5
Restructuring, asset impairments and other charges, net			$ 27.5		$ 27.5
General workforce reduction
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated \| employee					260
Severance Costs					$ 12.3
General workforce reduction \| Workforce Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring costs					12.3	8.4
Restructuring, asset impairments and other charges, net					$ 12.3	$ 8.4
General workforce reduction \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated \| employee						143
Charges						$ 8.4
Post-Quantenna acquisition restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs						15.7
Restructuring, asset impairments and other charges, net						15.7
Charges						$ 15.7
Post-Quantenna acquisition restructuring \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated \| employee						10
Post-Quantenna acquisition restructuring \| Employee Severance \| Executive Officer
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated \| employee	8

Balance Sheet Information - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Inventories:
Raw materials	$ 174.2	$ 135.7
Work in process	888.9	829.7
Finished goods	316.4	286.0
Inventories, net	1,379.5	1,251.4
Property, plant and equipment, net:
Property, plant and equipment, gross	5,864.8	5,507.7
Less: Accumulated depreciation	(3,340.5)	(2,995.4)
Property, plant and equipment, net	2,524.3	2,512.3
Accrued expenses:
Accrued payroll and related benefits	285.4	166.8
Sales related reserves	229.9	233.3
Income taxes payable	23.6	25.5
Other	208.7	144.4
Accrued expenses	747.6	570.0
Land
Property, plant and equipment, net:
Property, plant and equipment, gross	118.5	119.7
Buildings
Property, plant and equipment, net:
Property, plant and equipment, gross	968.5	850.0
Machinery and equipment
Property, plant and equipment, net:
Property, plant and equipment, gross	$ 4,777.8	$ 4,538.0

Balance Sheet Information - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]
Depreciation expense for property, plant and equipment	$ 436.5	$ 444.1	$ 409.7
Ship and credit reserves	$ 163.8	$ 180.2
Operating lease weighted average remaining lease term	8 years 6 months
Finance lease weighted average remaining lease term	20 years
Weighted average discount rate	4.30%
Finance lease weighted average discount rate percent	6.00%

Balance Sheet Information - Lease expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]
Operating lease	$ 39.7	$ 38.2	$ 35.0
Variable lease	3.8	4.2	4.0
Short-term lease	2.0	4.1	2.6
Total lease expense	45.5	46.5	$ 41.6
Operating lease liabilities included in:
Accrued expenses and other current liabilities	32.5	32.2
Other long-term liabilities	142.4	115.7
Lease liabilities	$ 174.9	$ 147.9
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Operating lease assets	$ 170.1	$ 136.3
Financing lease liabilities included in:
Accrued expenses and other current liabilities	12.7	0.0
Other long-term liabilities	10.2	0.0
Total	$ 22.9	0.0
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets
Finance lease assets	$ 22.3	$ 0.0
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent

Balance Sheet Information - Summary of Operating Leases Maturity and Future Minimum Payments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Operating Leases
2022	$ 37.9
2023	31.5
2024	28.7
2025	19.6
2026	12.4
Thereafter	85.0
Total lease payments	215.1
Less: Interest	(40.2)
Total lease liabilities	174.9	$ 147.9
Finance Leases
2022	13.6
2023	0.7
2024	0.7
2025	0.7
2026	0.8
Thereafter	15.2
Total lease payments	31.7
Less: Interest	(8.8)
Total lease liabilities	$ 22.9	$ 0.0

Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 14, 2021	May 19, 2021	May 11, 2021	May 10, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt	$ 3,258.3					$ 3,589.5
Less: Debt discount	(149.0)					(69.7)
Less: Debt issuance costs	(34.7)					(28.5)
Net long-term debt, including current maturities	3,074.6					3,491.3
Less: Current maturities	(160.7)					(531.6)
Net long-term debt	2,913.9					2,959.7
Senior Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	$ 0.0					$ 700.0
Debt instrument, interest rate (as a percent)	0.00%					1.90%
Term Loan B Facility
Debt Instrument [Line Items]
Long-term debt	$ 1,598.2					$ 1,614.5
Less: Debt discount	(7.5)					(9.0)
Less: Debt issuance costs	$ (17.7)					$ (21.0)
Debt instrument, interest rate (as a percent)	2.10%					2.15%
0% Notes \| Convertible Debt
Debt Instrument [Line Items]
Long-term debt	$ 805.0					$ 0.0
Less: Debt discount	(126.1)					0.0
Less: Debt issuance costs	$ (14.1)					0.0
Debt instrument, interest rate (as a percent)	0.00%
3.875% Notes \| Notes Payable
Debt Instrument [Line Items]
Long-term debt	$ 700.0					700.0
Less: Debt discount	(5.8)					(6.5)
Less: Debt issuance costs	$ (2.0)					$ (2.3)
Debt instrument, interest rate (as a percent)	3.875%					3.875%
1.625% Notes \| Convertible Debt
Debt Instrument [Line Items]
Long-term debt	$ 155.1					$ 575.0
Less: Debt discount	(9.6)					(54.2)
Less: Debt issuance costs	(0.9)					$ (5.2)
Less: Current maturities	$ (144.6)
Debt instrument, interest rate (as a percent)	1.625%	1.625%	1.625%	1.625%	1.625%	1.625%

Long-Term Debt - Schedule of Annual Maturities Relating to Long-Term Debt (Details) $ in Millions	Dec. 31, 2021 USD ($)
Debt Disclosure [Abstract]
2022	$ 171.5
2023	16.3
2024	16.3
2025	16.3
2026	1,532.9
Thereafter	1,505.0
Total	$ 3,258.3

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References + Details

Long-Term Debt - 0% Convertible Senior Notes (Details) $ / shares in Units, shares in Millions					12 Months Ended
	Dec. 14, 2021 USD ($)	Sep. 30, 2021 day	May 19, 2021 USD ($) day $ / shares shares	Mar. 31, 2017	Dec. 31, 2021 USD ($) day $ / shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	May 11, 2021 $ / shares	May 10, 2021
Debt Instrument [Line Items]
Adjustments to additional paid in capital, equity component of convertible debt					$ 136,600,000
Long-term debt					3,258,300,000
Amortization of debt discount and issuance costs					10,700,000	$ 12,100,000	$ 13,000,000.0
Payment for purchase of bond hedges					160,300,000	0	0
Share Price \| $ / shares								$ 37.17
Proceeds from issuance of warrants					$ 93,800,000	$ 0	0
0% Notes Warrants
Debt Instrument [Line Items]
Exercise price, warrants (in dollars per share) \| $ / shares			$ 74.34		$ 74.34
Premium over closing share price			100.00%
Number of warrants (in shares) \| shares			30.4
Proceeds from issuance of warrants			$ 93,800,000
0% Notes \| Convertible Debt
Debt Instrument [Line Items]
Debt instrument, interest rate					0.00%
Principal amount of debt			$ 805,000,000
Conversion rate			0.0188796
Conversion price per share (in dollars per share) \| $ / shares			$ 52.97		$ 52.97
Threshold percentage of stock price trigger (greater than or equal to)			130.00%
Threshold trading days \| day			20
Threshold consecutive trading days \| day			30
Maximum shares issuable (in shares) \| shares			21.7
Equity component of debt instrument	$ 800,000		$ 139,900,000		$ 143,200,000
Debt issuance costs			19,000,000
Debt issuance costs capitalized			15,700,000
Adjustments to additional paid in capital, equity component of convertible debt			$ 3,300,000
Effective interest rate			3.20%
Remaining term			6 years
Debt discount and issuance costs					140,200,000
Long-term debt					664,800,000
Amortization of debt discount and issuance costs					15,300,000
If-converted value in excess of principal					$ 227,200,000
Payment for purchase of bond hedges	$ 47,400,000
0% Notes \| Convertible Debt \| Embedded Derivative Financial Instruments
Debt Instrument [Line Items]
Payment for purchase of bond hedges			$ 160,300,000
0% Notes \| Convertible Debt \| Debt Conversion One
Debt Instrument [Line Items]
Threshold percentage of stock price trigger (greater than or equal to)			130.00%
Threshold trading days \| day			20
Threshold consecutive trading days \| day			30
0% Notes \| Convertible Debt \| Debt Conversion Two
Debt Instrument [Line Items]
Threshold consecutive trading days \| day			5
Period immediately following consecutive trading days (in business days)			5 days
Ratio of trading price per 1000 principal amount (as a percent) (less than)			0.98
1.625% Notes \| Convertible Debt
Debt Instrument [Line Items]
Debt instrument, interest rate	1.625%		1.625%		1.625%	1.625%		1.625%	1.625%
Conversion rate				0.0482567
Conversion price per share (in dollars per share) \| $ / shares					$ 20.72
Threshold percentage of stock price trigger (greater than or equal to)					130.00%
Threshold trading days \| day					20
Threshold consecutive trading days \| day		30
Equity component of debt instrument					$ 31,200,000	$ 115,700,000
Effective interest rate					5.27%
Remaining term					2 years
Debt discount and issuance costs					$ 10,500,000	59,400,000
Long-term debt					144,600,000	515,600,000
Amortization of debt discount and issuance costs					19,600,000	$ 28,700,000	$ 29,400,000
If-converted value in excess of principal					$ 353,400,000

Long-Term Debt - Amendments to the Credit Agreement (Details)	72 Months Ended
	Dec. 31, 2021 USD ($) amendment	Dec. 14, 2021	May 19, 2021	May 11, 2021	May 10, 2021	Dec. 31, 2020 USD ($)	Apr. 15, 2016 USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 3,258,300,000
Number of amendments to credit agreement \| amendment	9
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity							$ 1,970,000,000
Term Loan B Facility
Debt Instrument [Line Items]
Long-term debt							$ 2,400,000,000
Debt instrument, interest rate	2.10%					2.15%
Convertible Debt \| 0% Notes
Debt Instrument [Line Items]
Long-term debt	$ 664,800,000
Debt instrument, interest rate	0.00%
Convertible Debt \| 1.625% Notes
Debt Instrument [Line Items]
Long-term debt	$ 144,600,000					$ 515,600,000
Debt instrument, interest rate	1.625%	1.625%	1.625%	1.625%	1.625%	1.625%

Long-Term Debt - Partial exchange or repurchase of the 1.625% Notes (Details) $ / shares in Units, shares in Millions, $ in Millions						12 Months Ended
	Dec. 14, 2021 USD ($) shares	Sep. 30, 2021 day	May 19, 2021 USD ($) day $ / shares	May 11, 2021 USD ($) shares	Mar. 31, 2017	Dec. 31, 2021 USD ($) day $ / shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	May 10, 2021
Debt Instrument [Line Items]
Loss on debt refinancing and prepayment						$ (29.0)	$ 0.0	$ (6.2)
Stock issued during period, value, repurchase of convertible debt						(142.3)
Stock repurchased during period, value, settlement of bond hedges						0.0
Payment for purchase of bond hedges						160.3	0.0	0.0
Current portion of long-term debt						160.7	531.6
Long-term debt						3,258.3
Amortization of debt discount and issuance costs						10.7	$ 12.1	13.0
1.625% Notes Warrants
Debt Instrument [Line Items]
Number of convertible shares (in shares) \| shares	1.3			6.8
Additional Paid-in Capital
Debt Instrument [Line Items]
Stock issued during period, value, repurchase of convertible debt						(142.4)
Stock repurchased during period, value, settlement of bond hedges						$ (441.3)
0% Notes \| Convertible Debt
Debt Instrument [Line Items]
Debt instrument, interest rate (as a percent)						0.00%
Payment for purchase of bond hedges	$ 47.4
Equity component of debt instrument	$ 0.8		$ 139.9			$ 143.2
Threshold trading days \| day			20
Threshold consecutive trading days \| day			30
Threshold percentage of stock price trigger (greater than or equal to)			130.00%
Debt discount and issuance costs						140.2
Long-term debt						664.8
Amortization of debt discount and issuance costs						$ 15.3
Remaining term			6 years
Conversion rate			0.0188796
Conversion price per share (in dollars per share) \| $ / shares			$ 52.97			$ 52.97
Effective interest rate			3.20%
If-converted value in excess of principal						$ 227.2
0% Notes \| Convertible Debt \| Embedded Derivative Financial Instruments
Debt Instrument [Line Items]
Payment for purchase of bond hedges			$ 160.3
1.625% Notes \| Convertible Debt
Debt Instrument [Line Items]
Debt instrument, interest rate (as a percent)	1.625%		1.625%	1.625%		1.625%	1.625%		1.625%
Face amount repurchased or exchanged	$ 47.4			$ 372.4
Cash consideration for repurchase or exchange of convertible debt				$ 506.5
Company common stock (in shares) \| shares	1.6			5.4
Loss on debt refinancing and prepayment	$ 2.8			$ 26.2		$ (29.0)
Stock issued during period, value, repurchase of convertible debt				141.6
Equity component of debt instrument						31.2	$ 115.7
Current portion of long-term debt						$ 144.6
Threshold trading days \| day						20
Threshold consecutive trading days \| day		30
Stock price trigger (in dollars per share) \| $ / shares						$ 26.94
Threshold percentage of stock price trigger (greater than or equal to)						130.00%
Debt discount and issuance costs						$ 10.5	59.4
Long-term debt						144.6	515.6
Amortization of debt discount and issuance costs						$ 19.6	$ 28.7	$ 29.4
Remaining term						2 years
Conversion rate					0.0482567
Conversion price per share (in dollars per share) \| $ / shares						$ 20.72
Effective interest rate						5.27%
If-converted value in excess of principal						$ 353.4
1.625% Notes \| Convertible Debt \| Additional Paid-in Capital
Debt Instrument [Line Items]
Stock repurchased during period, value, settlement of bond hedges	$ 102.2			$ 339.0
1.625% Notes \| Convertible Debt \| Embedded Derivative Financial Instruments
Debt Instrument [Line Items]
Treasury stock common (in shares) \| shares	1.6			9.1
Treasury stock common value	$ 102.2			$ 339.0

Long-Term Debt - Revolving Credit Facility (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Senior Revolving Credit Facility
Debt Instrument [Line Items]
Repayments of Revolving Credit Facility		$ 700.0
Debt instrument, interest rate	1.90%	0.00%	1.90%
Remaining borrowing capacity		$ 1,970.0
Notes Payable \| 3.875% Notes
Debt Instrument [Line Items]
Debt instrument, interest rate	3.875%	3.875%	3.875%
Revolving Credit Facility \| Senior Revolving Credit Facility
Debt Instrument [Line Items]
Repayments of Revolving Credit Facility	$ 65.0		$ 1,200.0
Borrowings used to enter into convertible note hedge and warrant transactions			$ 1,165.0

Long-Term Debt - 3.875% Notes (Details) - USD ($)	Dec. 31, 2021	Dec. 14, 2021	May 19, 2021	May 11, 2021	May 10, 2021	Dec. 31, 2020	Aug. 21, 2020
3.875% Notes \| Notes Payable
Debt Instrument [Line Items]
Debt instrument, interest rate	3.875%					3.875%
Principal amount of debt							$ 700,000,000
Debt discount and issuance costs							$ 9,400,000
1.625% Notes \| Convertible Debt
Debt Instrument [Line Items]
Debt instrument, interest rate	1.625%	1.625%	1.625%	1.625%	1.625%	1.625%
Debt discount and issuance costs	$ 10,500,000					$ 59,400,000

Long-Term Debt - Maturity and Settlement of 1.00% Notes (Details) - USD ($)		12 Months Ended
	Dec. 01, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2021	Apr. 02, 2021
Debt Instrument [Line Items]
Shares issued to settle excess over principal for 1.00% Notes	$ 88,700,000	$ 0
Share repurchased value		65,400,000	$ 139,000,000.0
Additional Paid-in Capital
Debt Instrument [Line Items]
Shares issued to settle excess over principal for 1.00% Notes		(88,700,000)
Treasury Stock
Debt Instrument [Line Items]
Shares issued to settle excess over principal for 1.00% Notes		88,700,000
Share repurchased value		$ 65,400,000	$ 139,000,000.0
Convertible Debt \| 1.00% Notes
Debt Instrument [Line Items]
Debt instrument, interest rate	1.00%	1.00%		1.00%	1.00%
Principal amount of debt	$ 690,000,000
Share repurchased value		$ 0
Exercise price, warrants (in dollars per share)	$ 25.96
Convertible Debt \| 1.00% Notes \| Additional Paid-in Capital
Debt Instrument [Line Items]
Share repurchased value	$ 321,000,000	(321,000,000.0)
Convertible Debt \| 1.00% Notes \| Treasury Stock
Debt Instrument [Line Items]
Share repurchased value	$ 321,000,000	$ 321,000,000.0
Convertible Debt \| 1.00% Notes \| Embedded Derivative Financial Instruments
Debt Instrument [Line Items]
Number of convertible shares (in shares)	37,300,000			13,400,000

Earnings Per Share and Equity - Schedule of Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Net income (loss) attributable to ON Semiconductor Corporation	$ 1,009.6	$ 234.2	$ 211.7
Basic weighted average shares of common stock outstanding (in shares)	425.7	410.7	410.9
Add: Incremental shares for:
Dilutive effect of share-based awards (in shares)	2.5	1.9	1.9
Dilutive effect of convertible notes and warrants (in shares)	15.6	6.2	3.2
Diluted weighted average shares of common stock outstanding (in shares)	443.8	418.8	416.0
Net income per share of common stock attributable to ON Semiconductor Corporation:
Basic (in dollars per share)	$ 2.37	$ 0.57	$ 0.52
Diluted (in dollars per share)	$ 2.27	$ 0.56	$ 0.51

Earnings Per Share and Equity - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 14, 2021	May 19, 2021	May 11, 2021	May 10, 2021	Apr. 02, 2021	Dec. 01, 2020	Jun. 07, 2020	Nov. 15, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Anti-dilutive shares (in shares)	300,000	800,000	800,000
Aggregate purchase price	$ 0	$ 65,400,000	$ 139,000,000.0
Common stock repurchased	0	65,300,000	138,900,000
Amount remaining to be repurchased under the stock repurchase program	1,295,800,000	1,295,800,000	1,361,100,000
Payments of tax withholding for restricted shares	$ 38,900,000	20,000,000.0	33,500,000
Shares reissued or retired (in shares)	0
Noncontrolling interest balance	$ 19,000,000.0	19,600,000
Income attributable to non-controlling interests	1,600,000	2,200,000	2,200,000
Dividend to non-controlling shareholder	$ 2,200,000	$ 5,000,000.0	$ 2,300,000
0% Notes Warrants
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Exercise price, warrants (in dollars per share)	$ 74.34				$ 74.34
1.625% Notes Warrants
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Exercise price, warrants (in dollars per share)	30.70
1.00% Notes Warrants
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Exercise price, warrants (in dollars per share)	$ 25.96
Rights Agreement
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dividend declared (in shares)										1
Leshan
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Ownership percentage	80.00%
Noncontrolling interest balance	$ 19,000,000
OSA
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Additional ownership percentage acquired		40.00%
Settlement of purchase price		$ 26,000,000
Treasury Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Shares withheld for payment of taxes (in shares)	945,531	1,062,377	1,620,543
Noncontrolling Interest
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dividend to non-controlling shareholder	$ 2,200,000	$ 5,000,000.0	$ 2,300,000
2018 Program
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Authorized repurchases											$ 1,500,000,000
Common stock repurchased		$ 65,300,000	$ 138,900,000
Amount remaining to be repurchased under the stock repurchase program	1,295,800,000
Share Repurchase Program
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Aggregate purchase price	$ 0
1.00% Notes \| Convertible Debt
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Debt instrument, interest rate	1.00%	1.00%						1.00%	1.00%
Exercise price, warrants (in dollars per share)									$ 25.96
1.625% Notes \| Convertible Debt
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Debt instrument, interest rate	1.625%	1.625%		1.625%	1.625%	1.625%	1.625%
Conversion price per share (in dollars per share)	$ 20.72
0% Notes \| Convertible Debt
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Debt instrument, interest rate	0.00%
Conversion price per share (in dollars per share)	$ 52.97				$ 52.97

Earnings Per Share and Equity - Schedule of Share Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Number of repurchased shares (in shares)	0	3,600,000	7,800,000
Aggregate purchase price	$ 0.0	$ 65.3	$ 138.9
Fees, commissions and other expenses	0.0	0.1	0.1
Total cash used for share repurchases	$ 0.0	$ 65.4	$ 139.0
Weighted-average purchase price per share (in dollars per share)	$ 0	$ 18.08	$ 17.89
Available under the Share Repurchase Program	$ 1,295.8	$ 1,295.8	$ 1,361.1
Treasury shares reissued or retired (in shares)	0

Share-Based Compensation - Summary of Share-Based Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 101.3	$ 67.7	$ 79.4
Income tax benefit	(21.3)	(14.2)	(16.7)
Share-based compensation expense, net of taxes	80.0	53.5	62.7
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	15.6	11.5	10.6
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	24.2	18.2	17.0
Selling and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	16.6	12.9	14.8
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 44.9	$ 25.1	$ 37.0

Share-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	May 20, 2021	Mar. 23, 2010	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options granted in period (in shares)			0	0	0
Increase in shares available for issuance under the plan (in shares)	22,500,000
Shares available for issuance under the plan (in shares)	109,500,000
Share-based compensation expense			$ 101.3	$ 67.7	$ 79.4
Amended And Restated Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate of common stock available for grant (in shares)			42,200,000
Time Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense on non-vested restricted stock units			$ 92.6
Compensation expense recognized on restricted stock units			$ 46.9
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognition period for compensation expense (in years)			1 year 2 months 12 days
Restricted Stock \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity awards granted in period (in shares)			100,000
Weighted average grant date fair value (In dollars per share)			$ 37.91
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in shares available for issuance under the plan (in shares)	6,000,000
Shares available for issuance under the plan (in shares)	34,500,000
Aggregate of common stock available for grant (in shares)			8,200,000
Share-based compensation expense			$ 6.4
Shares issued pursuant to the ESPP (in shares)			700,000	1,800,000	1,700,000
Employee Stock Purchase Plan \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			$ 2.0
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-vesting forfeitures (as a percent)			6.00%	5.00%	5.00%
Equity awards granted in period (in shares)			2,600,000
Compensation expense recognized on restricted stock units			$ 92.9
Weighted average grant date fair value (In dollars per share)			$ 42.45
Restricted Stock Units \| Officers And Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity awards granted in period (in shares)			1,100,000
Service Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense on non-vested restricted stock units			$ 65.7
Service Based Restricted Stock Units \| Amended And Restated Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		3 years
Performance And Market Based Restricted Stock Units \| Amended And Restated Stock Incentive Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		2 years
Performance And Market Based Restricted Stock Units \| Amended And Restated Stock Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		3 years
Performance Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense on non-vested restricted stock units			7.5
Market Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense on non-vested restricted stock units			$ 19.4

Share-Based Compensation - Summary of Restricted Stock Units Transactions (Details) - Restricted Stock Units shares in Millions	12 Months Ended
	Dec. 31, 2021 $ / shares shares
Number of Shares
Nonvested shares of restricted stock units beginning (in shares) \| shares	11.3
Granted (in shares) \| shares	2.6
Released (in shares) \| shares	(3.0)
Forfeited (in shares) \| shares	(4.7)
Nonvested shares of restricted stock units ending (in shares) \| shares	6.2
Weighted-Average Grant Date Fair Value
Nonvested shares of restricted stock units beginning (in dollars per share) \| $ / shares	$ 20.73
Granted (in dollars per share) \| $ / shares	42.45
Released (in dollars per share) \| $ / shares	21.51
Forfeited (in dollars per share) \| $ / shares	22.03
Nonvested shares of restricted stock units ending (in dollars per share) \| $ / shares	$ 28.60

Employee Benefit Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Actuarial and other gain (loss)	$ 21.4	$ (4.0)	$ (15.6)
Net actuarial gain (loss)	$ 18.4	(8.1)
Employer contribution as percentage of employee contribution	100.00%
Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Actuarial and other gain (loss)	$ 21.4	(4.0)	(15.6)
Net actuarial gain (loss)	18.4
Better than expected return on plan assets	3.0
Compensation expense recognized	27.2	21.8	20.6
United States
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Compensation expense recognized	$ 16.7	$ 19.4	$ 18.1
Minimum
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Percentage of employee contribution, basis for employer contribution	0.00%
Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Percentage of employee contribution, basis for employer contribution	4.00%

Employee Benefit Plans - Summary of Net Periodic Pension Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Service cost	$ 11.7	$ 10.9	$ 9.4
Interest cost	4.5	4.7	5.0
Expected return on plan assets	(6.5)	(6.3)	(6.0)
Curtailment gain	(0.4)	(1.6)	0.0
Actuarial (gains) losses	(21.4)	4.0	15.6
Total net periodic pension (gain) cost	$ (12.1)	$ 11.7	$ 24.0
Discount rate used for net periodic pension costs	1.31%	1.43%	1.74%
Discount rate used for pension benefit obligations	1.54%	1.31%	1.43%
Expected return on plan assets	3.04%	3.06%	3.23%
Rate of compensation increase	3.45%	3.26%	3.07%

Employee Benefit Plans - Summary of Status Of Foreign Pension Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Projected benefit obligation at the beginning of the year	$ 351.2	$ 322.9
Change in projected benefit obligation (PBO)
Service cost	11.7	10.9	$ 9.4
Interest cost	4.5	4.7	5.0
Net actuarial (gain) loss	(18.4)	8.1
Benefits paid by plan assets	(15.9)	(8.9)
Benefits paid by the Company	(12.2)	(7.4)
Participant contributions	0.1	0.0
Curtailments and settlements	(0.4)	(1.6)
Translation and other (gain) loss	(27.0)	22.5
Projected benefit obligation at the end of the year	293.6	351.2	322.9
Accumulated benefit obligation at the end of the year	244.5	288.3
Change in plan assets
Fair value of plan assets at the beginning of the year	209.3	190.2
Actual return on plan assets	9.5	10.4
Benefits paid from plan assets	(15.9)	(8.9)
Employer contributions	3.9	4.3
Translation and other gain (loss)	(17.1)	13.3
Fair value of plan assets at the end of the year	189.7	209.3	$ 190.2
Plans with underfunded or non-funded projected benefit obligation
Projected benefit obligation	205.2	248.7
Fair value of plan assets	86.6	97.7
Plans with underfunded or non-funded accumulated benefit obligation
Accumulated benefit obligation	131.6	189.4
Fair value of plan assets	58.9	97.7
Amounts recognized in the balance sheet consist of
Non-current assets	14.7	9.0
Current liabilities	(0.2)	(0.3)
Non-current liabilities	(118.4)	(150.6)
Funded status	$ (103.9)	$ (141.9)

Employee Benefit Plans - Fair Value Measurement of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Allocation	100.00%	100.00%
Plan assets	$ 189.7	$ 209.3	$ 190.2
Cash/Money Markets
Defined Benefit Plan Disclosure [Line Items]
Allocation	2.00%	2.00%
Plan assets	$ 3.6	$ 4.1
Foreign Government/Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Allocation	9.00%	10.00%
Plan assets	$ 17.2	$ 21.4
Corporate Bonds, Debentures
Defined Benefit Plan Disclosure [Line Items]
Allocation	17.00%	18.00%
Plan assets	$ 32.5	$ 36.9
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Allocation	27.00%	23.00%
Plan assets	$ 52.3	$ 48.5
Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Allocation	6.00%	5.00%
Plan assets	$ 10.9	$ 9.5
Investment and Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Allocation	39.00%	42.00%
Plan assets	$ 73.2	$ 88.9
Level 1
Defined Benefit Plan Disclosure [Line Items]
Plan assets	20.8	25.5
Level 1 \| Cash/Money Markets
Defined Benefit Plan Disclosure [Line Items]
Plan assets	3.6	4.1
Level 1 \| Foreign Government/Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	17.2	21.4
Level 1 \| Corporate Bonds, Debentures
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 1 \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 1 \| Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 1 \| Investment and Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 2
Defined Benefit Plan Disclosure [Line Items]
Plan assets	118.3	126.3
Level 2 \| Cash/Money Markets
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 2 \| Foreign Government/Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 2 \| Corporate Bonds, Debentures
Defined Benefit Plan Disclosure [Line Items]
Plan assets	32.5	36.9
Level 2 \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	52.3	48.5
Level 2 \| Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	10.9	9.5
Level 2 \| Investment and Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Plan assets	22.6	31.4
Level 3
Defined Benefit Plan Disclosure [Line Items]
Plan assets	50.6	57.5
Level 3 \| Cash/Money Markets
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 3 \| Foreign Government/Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 3 \| Corporate Bonds, Debentures
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 3 \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 3 \| Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.0	0.0
Level 3 \| Investment and Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 50.6	$ 57.5	$ 52.0

Employee Benefit Plans - Activity of Plan Assets With Fair Value Measurement Using Significant Unobservable Inputs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at the beginning of the year	$ 209.3	$ 190.2
Foreign currency impact	(17.1)	13.3
Fair value of plan assets at the end of the year	189.7	209.3
Investment and Insurance Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at the beginning of the year	88.9
Fair value of plan assets at the end of the year	73.2	88.9
Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at the beginning of the year	57.5
Fair value of plan assets at the end of the year	50.6	57.5
Level 3 \| Investment and Insurance Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at the beginning of the year	57.5	52.0
Actual return on plan assets	(0.8)	0.8
Purchase, sales and settlements, net	(2.1)	(0.3)
Foreign currency impact	(4.0)	5.0
Fair value of plan assets at the end of the year	$ 50.6	$ 57.5

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References + Details

Employee Benefit Plans - Expected Benefit Payments (Details) $ in Millions	Dec. 31, 2021 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
2022	$ 8.9
2023	10.1
2024	12.1
2025	14.5
2026	15.3
Five years thereafter	101.7
Total	$ 162.6

Commitments and Contingencies - Future Minimum Purchase Obligations Under Non-cancelable Agreements (Details) - USD ($) $ in Millions	24 Months Ended
	Dec. 31, 2020	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
2022		$ 1,292.6
2023		326.8
2024		256.5
2025		4.9
2026		2.8
Thereafter		8.1
Total		1,891.7
Non-refundable deposit	$ 170.0
Contingent commitments related to pending acquisition		$ 230.0

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	Oct. 22, 2019	Dec. 31, 2021
Loss Contingencies [Line Items]
Maximum remediation cost recoveries receivable		$ 150.0
Availability under senior revolving credit facility		15.0
Outstanding guarantees and letters of credit outside of Revolving Credit Facility		6.1
Guarantees related subsidiaries		0.9
Power Integrations, Inc.
Loss Contingencies [Line Items]
Cash paid for legal settlements	$ 175.0
Letter of Credit \| Senior Revolving Credit Facility
Loss Contingencies [Line Items]
Credit commitment outstanding		$ 0.9

Fair Value Measurements - Available-for-sale Securities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Cash and Cash Equivalents \| Demand and time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	$ 19.5	$ 8.5
Unrealized gains	0.0	0.0
Unrealized losses	0.0	0.0
Fair value	19.5	8.5
Cash and Cash Equivalents \| Demand and time deposits \| Level 1 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	19.5	8.5
Cash and Cash Equivalents \| Demand and time deposits \| Level 2 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0	$ 0.0
Cash and Cash Equivalents \| Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	0.7
Unrealized gains	0.0
Unrealized losses	0.0
Fair value	0.7
Cash and Cash Equivalents \| Money market funds \| Level 1 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.7
Cash and Cash Equivalents \| Money market funds \| Level 2 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0
Cash and Cash Equivalents \| Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	1.6
Unrealized gains	0.0
Unrealized losses	0.0
Fair value	1.6
Cash and Cash Equivalents \| Corporate bonds \| Level 1 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0
Cash and Cash Equivalents \| Corporate bonds \| Level 2 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	1.6
Cash and Cash Equivalents \| Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	2.0
Unrealized gains	0.0
Unrealized losses	0.0
Fair value	2.0
Cash and Cash Equivalents \| Commercial paper \| Level 1 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0
Cash and Cash Equivalents \| Commercial paper \| Level 2 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	2.0
Other Current Assets \| Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	16.0
Unrealized gains	0.0
Unrealized losses	0.0
Fair value	16.0
Other Current Assets \| Corporate bonds \| Level 1 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0
Other Current Assets \| Corporate bonds \| Level 2 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	16.0
Other Current Assets \| Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	5.0
Unrealized gains	0.0
Unrealized losses	0.0
Fair value	5.0
Other Current Assets \| Commercial paper \| Level 1 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	3.0
Other Current Assets \| Commercial paper \| Level 2 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	2.0
Other Current Assets \| Certificate of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	1.9
Unrealized gains	0.0
Unrealized losses	0.0
Fair value	1.9
Other Current Assets \| Certificate of deposit \| Level 1 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0
Other Current Assets \| Certificate of deposit \| Level 2 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	1.9
Other Current Assets \| US Treasury bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	0.4
Unrealized gains	0.0
Unrealized losses	0.0
Fair value	0.4
Other Current Assets \| US Treasury bonds \| Level 1 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0
Other Current Assets \| US Treasury bonds \| Level 2 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 0.4
Other Assets \| Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment maturity	1 year
Other Assets \| Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment maturity	5 years
Other Assets \| Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	$ 19.7
Unrealized gains	0.0
Unrealized losses	0.0
Fair value	19.7
Other Assets \| Corporate bonds \| Level 1 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0
Other Assets \| Corporate bonds \| Level 2 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	19.7
Other Assets \| US Treasury bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	1.6
Unrealized gains	0.0
Unrealized losses	0.0
Fair value	1.6
Other Assets \| US Treasury bonds \| Level 1 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	0.0
Other Assets \| US Treasury bonds \| Level 2 \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 1.6

Fair Value Measurements - Fair Value of Long-Term Debt, Including Current Portion (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current portion, carrying amount	$ 3,258.3	$ 3,589.5
Convertible notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current portion, carrying amount	809.4	515.6
Long-term debt, including current portion, fair value	1,696.7	967.1
Long-term debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current portion, carrying amount	2,265.2	2,975.7
Long-term debt, including current portion, fair value	$ 2,245.5	$ 2,966.8

Fair Value Measurements - Narrative (Details) - USD ($)	Dec. 31, 2021	Dec. 14, 2021	May 19, 2021	May 11, 2021	May 10, 2021	Dec. 31, 2020
Non-financial Assets \| Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-financial assets	$ 0					$ 0
Notes Payable \| 3.875% Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, interest rate	3.875%					3.875%
Convertible Debt \| 1.625% Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, interest rate	1.625%	1.625%	1.625%	1.625%	1.625%	1.625%
Convertible Debt \| 0% Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, interest rate	0.00%

Fair Value Measurements - Adjustments to Fair Value of Non-Financial Assets (Details) - Fair Value, Measurements, Nonrecurring - Fair Value Inputs (Level 3) - Changes Measurement - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairments (Level 3)	$ 7.9	$ 17.5	$ 3.4
IPRD impairments (Level 3)	2.9	1.3	1.6
Total assets	$ 10.8	$ 18.8	$ 5.0

Financial Instruments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 14, 2021	May 19, 2021	May 11, 2021	May 10, 2021
Foreign exchange contract
Derivatives, Fair Value [Line Items]
Notional amount	$ 288.3	$ 263.4
Realized and unrealized foreign currency transaction loss	0.8	$ 6.2	$ 5.0
Interest rate swap agreement 2022
Derivatives, Fair Value [Line Items]
Notional amount	750.0
Interest rate swap agreement 2023
Derivatives, Fair Value [Line Items]
Notional amount	500.0
Interest rate swap agreement 2024
Derivatives, Fair Value [Line Items]
Notional amount	$ 500.0
Convertible Debt \| 1.625% Notes
Derivatives, Fair Value [Line Items]
Debt instrument, interest rate	1.625%	1.625%		1.625%	1.625%	1.625%	1.625%
Convertible Debt \| 0% Notes
Derivatives, Fair Value [Line Items]
Debt instrument, interest rate	0.00%

Financial Instruments - Schedule of Net Foreign Exchange Positions (Details) - Foreign exchange contract - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Financial Instruments [Line Items]
Buy (Sell)	$ 279.7	$ 241.2
Notional Amount	288.3	263.4
Other currencies - Buy
Financial Instruments [Line Items]
Buy (Sell)	27.9	18.4
Notional Amount	27.9	18.4
Other currencies - Sell
Financial Instruments [Line Items]
Buy (Sell)	(4.3)	(11.1)
Notional Amount	4.3	11.1
Philippine Peso
Financial Instruments [Line Items]
Buy (Sell)	67.1	57.2
Notional Amount	67.1	57.2
Euro
Financial Instruments [Line Items]
Buy (Sell)	65.9	47.7
Notional Amount	65.9	47.7
Korean Won
Financial Instruments [Line Items]
Buy (Sell)	44.1	34.4
Notional Amount	44.1	34.4
Japanese Yen
Financial Instruments [Line Items]
Buy (Sell)	33.2	71.2
Notional Amount	33.2	71.2
Chinese Yuan
Financial Instruments [Line Items]
Buy (Sell)	15.1	17.7
Notional Amount	15.1	17.7
Singapore Dollar
Financial Instruments [Line Items]
Buy (Sell)	15.7	5.7
Notional Amount	15.7	5.7
Czech Koruna
Financial Instruments [Line Items]
Buy (Sell)	15.0	0.0
Notional Amount	$ 15.0	$ 0.0

Income Taxes - Income (Loss) Before Income Taxes and Non-controlling Interests (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ 873.2	$ (181.2)	$ (308.2)
Foreign	284.6	357.8	584.8
Income before income taxes	$ 1,157.8	$ 176.6	$ 276.6

Income Taxes - Provision (Benefit) For Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 8.0	$ 0.6	$ 1.2
State and local	4.8	0.1	0.0
Foreign	43.3	54.0	48.5
Current, Provision (benefit) for income taxes	56.1	54.7	49.7
Deferred:
Federal	89.2	(69.2)	(5.0)
State and local	7.8	(66.4)	0.0
Foreign	(6.5)	21.1	18.0
Deferred, Provision (benefit) for income taxes	90.5	(114.5)	13.0
Total provision (benefit)	$ 146.6	$ (59.8)	$ 62.7

Income Taxes - Reconciliation Of The U.S. Federal Statutory Income Tax Rate (Details) - USD ($) $ in Millions		12 Months Ended
	Jul. 06, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Line Items]
U.S. federal statutory rate (as a percent)		21.00%	21.00%	21.00%
Increase (decrease) resulting from:
State and local taxes, net of federal tax benefit		1.40%	(1.40%)	(2.60%)
Impact of foreign operations		(2.00%)	7.60%	3.80%
Foreign derived intangible income benefit		(7.80%)	0.00%	0.00%
Impact of the Domestication	(35.70%)	0.00%	(35.70%)	0.00%
Change in valuation allowance and related effects		(0.40%)	(24.40%)	1.80%
Non-deductible share-based compensation costs		(0.10%)	1.70%	(0.50%)
U.S. federal R&D credit		(0.40%)	(3.60%)	(3.70%)
Non-deductible officer compensation		0.40%	1.10%	1.50%
Other		0.60%	(0.10%)	1.40%
Total		12.70%	(33.80%)	22.70%
Recognition of deferred tax assets, net	$ 63.0
Change in valuation allowance, benefit			$ 49.4
Change in valuation allowance, benefit, percent			28.00%
Election to waive deductions		$ 8.5
Election to waive deductions, percent		0.70%
Foreign
Increase (decrease) resulting from:
Change in valuation allowance, benefit		$ 26.3	$ 61.8	$ 11.2
Change in valuation allowance, benefit, percent		2.20%	35.00%	4.00%
Change in valuation allowance, expense		$ 22.6	$ 61.8	$ 11.2
Change in valuation allowance, expense, percent		1.90%	35.00%	4.00%

Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Effective income tax rate (benefit) (as a percent)	12.70%	(33.80%)	22.70%
Deferred tax assets, valuation allowance	$ 227.4	$ 249.9
Balance of unrecognized tax benefit	137.2	151.0	$ 130.0	$ 112.2
Unrecognized tax position, that would affect the annual effective tax rate	92.5
Unrecognized tax benefits that would impact deferred taxes	44.7
Estimate of decrease in unrecognized tax positions	64.2
Interest and penalties tax expense (benefit)	(3.3)	0.2
Accrued interest and penalties	1.3	5.3	$ 5.1
Federal
Income Taxes [Line Items]
Net operating loss carryforwards	77.5	99.0
Tax credit carryforwards	43.6	153.4
State
Income Taxes [Line Items]
Net operating loss carryforwards	491.1	741.3
Tax credit carryforwards	138.4	141.1
Deferred tax assets, valuation allowance	69.7
Foreign
Income Taxes [Line Items]
Net operating loss carryforwards	551.8	581.6
Tax credit carryforwards	69.2	$ 69.4
National Tax Agency, Japan
Income Taxes [Line Items]
Valuation allowance	93.4
Inland Revenue, Hong Kong
Income Taxes [Line Items]
Valuation allowance	$ 25.5

Income Taxes - Tax Effects Of Temporary Differences (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
NOL and tax credit carryforwards	$ 354.4	$ 471.6
163 (j) interest expense carryforward	17.4	65.7
Lease liabilities	50.2	32.5
ROU asset	(49.2)	(32.5)
Tax-deductible goodwill and amortizable intangibles	(57.5)	(38.0)
Capitalization of research and development expenses	185.8	90.7
Reserves and accruals	109.2	68.4
Property, plant and equipment	(110.6)	(95.8)
Inventories	67.9	84.3
Undistributed earnings of foreign subsidiaries	(58.7)	(57.5)
Share-based compensation	7.9	7.7
Pension	15.3	21.2
Other	18.4	3.2
Deferred tax assets and liabilities before valuation allowance	550.5	621.5
Valuation allowance	(227.4)	(249.9)
Net deferred tax asset	$ 323.1	$ 371.6

Income Taxes - Activity for Unrecognized Gross Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Unrecognized Gross Tax Benefits
Balance at beginning of year	$ 151.0	$ 130.0	$ 112.2
Acquired balances	9.3	0.0	15.5
Additions for tax benefits related to the current year	3.1	11.9	9.4
Additions for tax benefits of prior years	0.0	12.3	8.0
Reductions for tax benefits of prior years	(19.7)	(1.4)	(0.2)
Lapse of statute	(2.7)	(1.3)	(8.2)
Settlements	(3.8)	(0.5)	(6.7)
Balance at end of year	$ 137.2	$ 151.0	$ 130.0

Changes in Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	$ 3,558.1	$ 3,324.1	$ 3,194.1
Other comprehensive income prior to reclassifications	36.1	16.7
Amounts reclassified from accumulated other comprehensive loss	(19.1)	(20.0)
Other comprehensive income (loss), net of tax	17.0	(3.3)	(16.4)
Balance, ending	4,604.4	3,558.1	3,324.1
Effects of cash flow hedges, tax expense (benefit)	6.1	(1.7)
Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(40.6)	(42.4)
Other comprehensive income prior to reclassifications	(3.8)	1.8
Amounts reclassified from accumulated other comprehensive loss	0.0	0.0
Other comprehensive income (loss), net of tax	(3.8)	1.8
Balance, ending	(44.4)	(40.6)	(42.4)
Effects of Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(17.0)	(11.9)
Other comprehensive income prior to reclassifications	39.9	14.9
Amounts reclassified from accumulated other comprehensive loss	(19.1)	(20.0)
Other comprehensive income (loss), net of tax	20.8	(5.1)
Balance, ending	3.8	(17.0)	(11.9)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(57.6)	(54.3)	(37.9)
Balance, ending	$ (40.6)	$ (57.6)	$ (54.3)

Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Changes in Accumulated Other Comprehensive Loss - Schedule of Reclassifications from Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 18.0	$ (8.6)	$ (11.8)
Total reclassifications	1,011.2	236.4	$ 213.9
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications	19.1	20.0
Effects of Cash Flow Hedges \| Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 19.1	$ 20.0

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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