Accumulated Other Comprehensive Income (Details Of The Reclassification From AOCI) (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net gains (losses) on financial instruments at fair value and foreign exchange	$ (55)	$ 11	$ (51)	$ (1)
Net income (loss)	(254)	(74)	(340)	(167)
Amounts reclassified from AOCI [Member]
Net income (loss)	(11)	(28)	(30)	(47)
Unrealized gains (losses) on AFS, net [Member] \| Amounts reclassified from AOCI [Member]
Net realized investment gains (losses)	(2)	(8)	(2)	(13)
Instrument-specific credit risk of liabilities measured at fair value, net [Member] \| Amounts reclassified from AOCI [Member]
Other net realized gains (losses)	(9)	(7)	(9)	(21)
Net gains (losses) on financial instruments at fair value and foreign exchange	$ 0	$ (13)	$ (19)	$ (13)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details