Commitment, Contingencies, And Guarantees (Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net realized gains (losses)	$ (455)	$ 283	$ (700)	$ 327
Interest expense reclassified from OCI	204	197	602	559
Designated as Hedging Instrument \| Fair Value Hedging \| Currency Swap [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Gain (loss) recognized in OCI	(9)	(17)	(36)	98
Net realized gains (losses)	(16)	(9)	(73)	229
Interest expense reclassified from OCI	(5)	(5)	(14)	(14)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	$ 12	$ (3)	$ 51	$ (117)

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