Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2023
Amounts available under programs	$ 905	$ 920
Amount confirmed	611	$ 710
Prepaid Expenses and Other Current Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash	70		$ 71
Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash	$ 11		$ 13
Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Invoice due dates	120 days