INVESTMENTS - Information Regarding Pretax Net Gains and Losses From Investments (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Gain (Loss) on Securities [Line Items]
Other investments, gross gains (losses) from sales and redemptions	$ 0	$ 11	$ (2)	$ 12
Impairment losses	(11)	(6)	(35)	(6)
Net investment gains (losses)	(153)	(421)	(104)	(1,384)
Credit losses:
Fixed maturity securities held to maturity	0	0	(1)	0
Commercial mortgage and other loans	(76)	(61)	(126)	(114)
Loan commitments	(1)	2	1	0
Reinsurance recoverables and other	0	1	(14)	1
Total credit losses	(77)	(58)	(138)	(113)
Derivatives and other:
Derivative gains (losses)	(134)	23	(229)	(22)
Foreign currency gains (losses)	220	(475)	479	(1,318)
Fixed maturity securities
Gain (Loss) on Securities [Line Items]
Gross gains from sales	0	5	1	119
Gross losses from sales	(837)	(98)	(978)	(333)
Foreign currency gains (losses)	599	79	725	240
Debt securities and other investments
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	(238)	(3)	(254)	38
Equity securities
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	87	98	73	37
Derivatives and other
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	$ 86	$ (452)	$ 250	$ (1,340)

Foreign currency translation gains (losses) on remeasurement of monetary assets

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Other Impairments

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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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