Commitments, Contingencies, And Guarantees (Schedule of Net Investment Hedges, Statements of Financial Performance and Financial Position, Location) (Details) - Designated as Hedging Instrument - Net Investment Hedging - 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]
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	$ (151)	$ 34	$ (135)	$ 67
INA CNH Term Loan Due April 2028 [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(6)	0	(6)	0
Currency Swap [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Gain (loss) recognized in OCI	(138)	37	(114)	73
Interest income reclassified from OCI	7	3	15	6
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	$ (145)	$ 34	$ (129)	$ 67