Commitment, Contingencies, And Guarantees (Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net realized gains (losses)	$ 162	$ 160	$ (245)	$ 44
Interest expense reclassified from OCI	200	181	398	362
Designated as Hedging Instrument \| Fair Value Hedging \| Currency Swap [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Gain (loss) recognized in OCI	16	141	(27)	115
Net realized gains (losses)	(23)	169	(57)	238
Interest expense reclassified from OCI	(4)	(5)	(9)	(9)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	$ 43	$ (23)	$ 39	$ (114)

Amount of interest expense classified as operating and nonoperating. Includes, but is not limited to, cost of borrowing accounted for as interest expense.

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+ Details