INVESTMENTS - Information Regarding Pretax Net Gains and Losses From Investments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023		Dec. 31, 2022
Gain (Loss) on Securities [Line Items]
Gross gains (losses) from sales and redemptions	$ 7	$ 33		$ 10
Credit Losses
(Addition to) release of allowance for credit losses	0	1	[1]	0
Commercial mortgage and other loans	(207)	(146)		(18)
Impairment losses	(55)	0		(25)
Loan commitments	1	9		9
Reinsurance recoverables and other	5	(3)		(2)
Total credit losses	(256)	(139)		(36)
Derivatives and Other
Derivative gains (losses)	(363)	(531)		(1,151)
Foreign currency gains (losses)	1,491	972		1,424
Total net investment gains (losses)	1,271	590		363
Fixed maturity securities
Gain (Loss) on Securities [Line Items]
Gross gains from sales	80	24		93
Gross losses from sales	(634)	(61)		(78)
Foreign currency gains (losses) on sales and redemptions	806	204		442
Debt securities and other investments
Derivatives and Other
Total net investment gains (losses)	259	200		467
Equity securities
Derivatives and Other
Total net investment gains (losses)	140	88		(341)
Derivatives and other
Derivatives and Other
Total net investment gains (losses)	$ 1,128	$ 441		$ 273

[1] Includes an allowance for credit losses of $4 recognized on financial assets accounted for as purchased financial assets with credit deterioration that is not recorded in earnings upon recognition.