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Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax Holiday [Line Items]      
Document Fiscal Year Focus 2021    
Effective Income Tax Rate Reconciliation [Abstract]      
U.S. Federal income tax rate 21.00% 21.00% 21.00%
State and local taxes, net of Federal income tax benefit 0.30% 4.20% 0.20%
Foreign operations tax effect 3.30% 17.30% 5.00%
Research and experimentation tax credits (3.80%) (29.50%) (5.00%)
Valuation allowance (57.10%) 85.40% 15.00%
Tax contingencies 0.60% 0.30% 1.30%
Tax holiday (10.10%) (37.80%) (24.60%)
Foreign taxes 1.00% 2.80% 2.10%
Other, principally non-tax deductible items (0.20%) 1.00% (2.90%)
Stock-based compensation 4.80% 11.30% 3.00%
Other, principally non-tax deductible items 0.10% 1.10% 0.30%
Prior period items (0.50%) (8.80%) (1.00%)
Effective income tax rate (43.60%) 74.30% 25.00%
Foreign statutory income tax rate (2.30%) 12.10% 10.60%
Effective Income Tax Rate Reconciliation, Foreign Currency Adjustments, Percent (0.70%) (6.10%) 0.00%
Foreign Tax Authority      
Effective Income Tax Rate Reconciliation [Abstract]      
Tax holiday (7.20%)    
Effective income tax rate reconciliation, tax holiday $ 10.7 $ 3.8 $ 14.6
Income tax holiday benefit (usd per share) $ 0.12 $ 0.04 $ 0.16
Inland Revenue, Singapore (IRAS) | Foreign Tax Authority      
Effective Income Tax Rate Reconciliation [Abstract]      
Foreign statutory income tax rate 24.00%