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Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Tax Credit Carryforward [Line Items]
Earnings and Profits (E&P) of foreign subsidiaries	$ 619
Change in valuation allowance	13	$ 8	$ (15)
R&D tax credits	7	6	$ 5
Expiration Between Years 2035 To 2040 [Member]
Tax Credit Carryforward [Line Items]
R&D tax credits	31
U.S Federal and State [Member] \| Expiration Between Years 2036 To 2039 [Member]
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	10
Foreign [Member] \| Expiration Between Years 2026 to 2030 [Member]
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	12
Foreign [Member] \| Expiration Between Years 2025 to 2030 [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	7
Foreign Subsidiary [Member]
Tax Credit Carryforward [Line Items]
Change in valuation allowance	12	5
Foreign Tax Credits [Member]
Tax Credit Carryforward [Line Items]
Change in valuation allowance	$ 2	$ 3