Derivatives - Schedule of Gains (Losses) Excluded From Assessment of Hedge Effectiveness Recognized in OCI (Details) - Fair Value Hedging - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Forwards
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) excluded from the assessment of hedge effectiveness recognized in OCI	$ 1	$ 26
Swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) excluded from the assessment of hedge effectiveness recognized in OCI	$ 193	$ 107

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.

- Definition

Amount, before tax and adjustments, of gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method.

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