Accounting Policies - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 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	$ 873	$ 920
Amount confirmed	598	710
Goodwill	1,010	1,014
Intangible Assets	975	$ 1,004
Americas Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Goodwill	724
Europe Middle Eastand Africa Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Goodwill	$ 230
Estimated fair value percentage	15.00%
Asia Pacific Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Goodwill	$ 56
Prepaid Expenses and Other Current Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash	68
Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash	$ 11
Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Invoice due dates	120 days