INVESTMENTS - Information Regarding Pretax Net Gains and Losses From Investments (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Gain (Loss) on Securities [Line Items]
Gross gains (losses) from sales and redemptions	$ 36	$ 1	$ 33	$ 10
Gross gains (losses) from sales and redemptions	(53)	0	(53)	0
Net investment gains (losses)	423	199	1,101	885
Credit losses:
Fixed maturity securities held-to-maturity	0	0	1	0
Commercial mortgage and other loans	(30)	(12)	(63)	(8)
Impairment losses	0	(4)	0	(21)
Loan commitments	1	5	5	7
Reinsurance recoverables and other	0	0	(3)	2
Total credit losses	(29)	(11)	(60)	(20)
Derivatives and other:
Derivative gains (losses)	(53)	(491)	(630)	(1,515)
Foreign currency gains (losses)	434	664	1,651	2,473
Fixed maturity securities
Gain (Loss) on Securities [Line Items]
Gross gains from sales	3	8	11	93
Gross losses from sales	(13)	(4)	(22)	(30)
Foreign currency gains (losses)	51	54	136	187
Debt Securities, Financing Receivables, and Other Investments
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	24	59	105	260
Equity securities
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	47	(22)	35	(313)
Derivatives and other
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	$ 381	$ 173	$ 1,021	$ 958

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