Derivatives - Schedule of Carrying Amount and the Cumulative Fair Value Hedging Adjustments (Details) - Fair Value Hedging - Interest sensitive contract liabilities - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Foreign currency interest rate swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying amount of the hedged liabilities	$ 4,033	$ 4,271
Cumulative amount of fair value hedging gains (losses)	87	77
Interest rate swaps and forwards and other swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying amount of the hedged liabilities	20,287	19,175
Cumulative amount of fair value hedging gains (losses)	$ 81	$ (20)

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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