Derivative Financial Instruments and Risk Management - Location and Fair Value of Derivative Instruments Reported in the Consolidated Statements of Financial Position (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Derivatives, Fair Value
Derivative assets	$ 199	$ 322
Derivative liabilities	(98)	(139)
Designated derivatives
Derivatives, Fair Value
Derivative assets	171	238
Derivative liabilities	(67)	(120)
Designated derivatives | Foreign exchange contracts
Derivatives, Fair Value
Derivative assets	128	228
Derivative liabilities	(48)	(89)
Designated derivatives | Interest rate contracts
Derivatives, Fair Value
Derivative assets	43	10
Derivative liabilities	(19)	(31)
Undesignated derivatives
Derivatives, Fair Value
Derivative assets	28	84
Derivative liabilities	(31)	(19)
Undesignated derivatives | Foreign exchange contracts
Derivatives, Fair Value
Derivative assets	28	84
Derivative liabilities	$ (31)	$ (19)