Income Taxes - Valuation Allowance (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Valuation Allowance [Line Items]
Balance at beginning of period	$ 79
Balance at end of period	77
Statute expirations for federal and state NOL and foreign tax credits
Valuation Allowance [Line Items]
Change in valuation allowances	(5)
Currency Fluctuation
Valuation Allowance [Line Items]
Change in valuation allowances	$ 3