Accounting Policies - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 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	$ 921	$ 920
Amount confirmed	$ 624	$ 710
Prepaid Expenses and Other Current Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash			$ 65
Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash			$ 14
Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Invoice due dates	120 days