Financial Instruments - Fair Values of Derivatives (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Derivative assets	$ 196	$ 136	[1]
Derivative liabilities	146	216	[1]
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative assets	147	91
Derivative liabilities	109	166
Derivatives designated as hedging instruments | Interest rate derivatives
Derivatives, Fair Value [Line Items]
Derivative assets	103	60
Derivative liabilities	58	117
Derivatives designated as hedging instruments | Foreign currency contracts
Derivatives, Fair Value [Line Items]
Derivative assets	44	31
Derivative liabilities	51	49
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative assets	49	45
Derivative liabilities	37	50
Derivatives not designated as hedging instruments | Interest rate derivatives
Derivatives, Fair Value [Line Items]
Derivative assets	22	31
Derivative liabilities	22	30
Derivatives not designated as hedging instruments | Foreign currency contracts
Derivatives, Fair Value [Line Items]
Derivative assets	27	14
Derivative liabilities	$ 15	$ 20

[1] See Note 23 Immaterial Revision of Prior Period Financial Statements.