INVESTMENTS - Information Regarding Pretax Net Gains and Losses From Investments (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Gain (Loss) on Securities [Line Items]
Total net investment gains (losses)	$ 363	$ 468	$ (270)
Credit Losses
Fixed maturity securities available for sale	0	38	(38)
Fixed maturity securities held to maturity	0	1	1
Commercial mortgage and other loans	(18)	6	(93)
Impairment losses	(25)	(20)	(49)
Loan commitments	9	4	(21)
Reinsurance recoverables and other	(2)	(2)	0
Total credit losses	(36)	27	(200)
Derivatives and Other
Derivative gains (losses)	(1,151)	(805)	399
Foreign currency gains (losses)	1,424	1,069	(568)
Derivatives and other
Gain (Loss) on Securities [Line Items]
Total net investment gains (losses)	273	264	(169)
Fixed maturity securities
Gain (Loss) on Securities [Line Items]
Gross gains from sales	93	64	31
Gross losses from sales	(78)	(52)	(47)
Foreign currency gains (losses) on sales and redemptions	442	1	(69)
Total net investment gains (losses)	467	13	(85)
Other Investments
Gain (Loss) on Securities [Line Items]
Gross gains from sales	10	0	0
Equity securities
Gain (Loss) on Securities [Line Items]
Total net investment gains (losses)	$ (341)	$ 164	$ 184

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

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