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, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net realized gains (losses)	$ 160	$ 104	$ 44	$ 3
Interest expense reclassified from OCI	181	182	362	360
Designated as Hedging Instrument | Fair Value Hedging | Currency Swap [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Gain (loss) recognized in OCI	141	(46)	115	(54)
Net realized gains (losses)	169	(12)	238	(49)
Interest expense reclassified from OCI	(5)	(4)	(9)	(8)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	$ (23)	$ (30)	$ (114)	$ 3