Financial Instruments - Fair Value (Level 2) of Derivative Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value, Asset  Derivatives	$ 74	$ 111
Fair Value, Liability  Derivatives	78	117
Interest rate swaps | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value, Asset  Derivatives	50	61
Fair Value, Liability  Derivatives	0	0
Foreign exchange contract | Derivatives not designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value, Asset  Derivatives	5	4
Fair Value, Liability  Derivatives	4	6
Interest rate caps | Derivatives not designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value, Asset  Derivatives	19	46
Fair Value, Liability  Derivatives	$ 74	$ 111