INVESTMENTS - Allowance for Credit Losses by Portfolio Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Allowance for Credit Losses by Portfolio Segment [Roll Forward]
Balance, beginning of period	$ (355)
Balance, end of period	(426)	$ (355)
Balance, beginning of period	(5)	(5)	$ (7)
(Addition to) release of allowance for credit losses	0	0	1	[1]
Writeoffs, net of recoveries	0	0	0
Change in foreign exchange	0	0	1
Balance, end of period	(5)	(5)	(5)
Balance, beginning of period	0	0	0
(Addition to) release of allowance for credit losses	0	0	0	[1]
Writeoffs, net of recoveries	0	0	0
Change in foreign exchange	0	0	0
Balance, end of period	0	0	0
Balance, beginning of period	(375)	(295)	(223)
(Addition to) release of allowance for credit losses	(191)	(210)	(139)	[1]
Writeoffs, net of recoveries	120	130	66
Change in foreign exchange	0	0	1
Balance, end of period	(446)	(375)	(295)
Allowance for credit loss accounted for as purchased financial assets with credit deterioration			4
Transitional real estate loans
Allowance for Credit Losses by Portfolio Segment [Roll Forward]
Balance, beginning of period	(199)	(112)	(54)
(Addition to) release of allowance for credit losses	(107)	(148)	(124)	[1]
Writeoffs, net of recoveries	29	61	66
Change in foreign exchange	0	0	0
Balance, end of period	(277)	(199)	(112)
Commercial mortgage loans
Allowance for Credit Losses by Portfolio Segment [Roll Forward]
Balance, beginning of period	(14)	(16)	(9)
(Addition to) release of allowance for credit losses	5	(17)	(7)	[1]
Writeoffs, net of recoveries	0	19	0
Change in foreign exchange	0	0	0
Balance, end of period	(9)	(14)	(16)
Middle market loans
Allowance for Credit Losses by Portfolio Segment [Roll Forward]
Balance, beginning of period	(140)	(146)	(129)
(Addition to) release of allowance for credit losses	(89)	(44)	(17)	[1]
Writeoffs, net of recoveries	91	50	0
Change in foreign exchange	0	0	0
Balance, end of period	(138)	(140)	(146)
Other loans and loan commitments
Allowance for Credit Losses by Portfolio Segment [Roll Forward]
Balance, beginning of period	(17)	(16)	(24)
(Addition to) release of allowance for credit losses	0	(1)	8	[1]
Writeoffs, net of recoveries	0	0	0
Change in foreign exchange	0	0	0
Balance, end of period	$ (17)	$ (17)	$ (16)

[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.