INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities by Security Type (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Fair Value
Less than 12 months	$ 4,455	$ 10,604
Greater than 12 months	7,279	7,728
Total	11,734	18,332
Gross Unrealized Depreciation
Less than 12 months	(94)	(324)
Greater than 12 months	(614)	(833)
Total	(708)	(1,157)
No Recorded Allowance for Credit Losses
Fair Value
Less than 12 months	4,453	10,587
Greater than 12 months	7,264	7,728
Total	11,717	18,315
Gross Unrealized Depreciation
Less than 12 months	(94)	(323)
Greater than 12 months	(613)	(833)
Total	(707)	(1,156)
U.S. Treasury securities and obligations of U.S. government agencies and corporations
Fair Value
Less than 12 months	162	80
Greater than 12 months	363	398
Total	524	478
Gross Unrealized Depreciation
Less than 12 months	(4)	(1)
Greater than 12 months	(19)	(23)
Total	(22)	(24)
Obligations of U.S. States and political subdivisions
Fair Value
Less than 12 months	8	9
Greater than 12 months	36	40
Total	44	48
Gross Unrealized Depreciation
Less than 12 months	0	0
Greater than 12 months	(5)	(5)
Total	(6)	(5)
Corporate securities
Fair Value
Less than 12 months	1,345	2,744
Greater than 12 months	1,926	2,132
Total	3,271	4,876
Gross Unrealized Depreciation
Less than 12 months	(35)	(76)
Greater than 12 months	(154)	(221)
Total	(189)	(297)
Asset-backed securities
Fair Value
Less than 12 months	440	958
Greater than 12 months	281	537
Total	721	1,495
Gross Unrealized Depreciation
Less than 12 months	(6)	(20)
Greater than 12 months	(9)	(19)
Total	(15)	(39)
Commercial
Fair Value
Less than 12 months		53
Greater than 12 months		757
Total		810
Gross Unrealized Depreciation
Less than 12 months		(3)
Greater than 12 months		(63)
Total		(66)
Agency commercial
Fair Value
Less than 12 months	88
Greater than 12 months	17
Total	105
Gross Unrealized Depreciation
Less than 12 months	0
Greater than 12 months	(1)
Total	(1)
Non-agency commercial
Fair Value
Less than 12 months	86
Greater than 12 months	678
Total	764
Gross Unrealized Depreciation
Less than 12 months	(5)
Greater than 12 months	(34)
Total	(39)
Agency residential
Fair Value
Less than 12 months	454	2,754
Greater than 12 months	1,683	1,226
Total	2,138	3,980
Gross Unrealized Depreciation
Less than 12 months	(5)	(115)
Greater than 12 months	(173)	(172)
Total	(178)	(287)
Non-agency residential
Fair Value
Less than 12 months	154	654
Greater than 12 months	19	25
Total	173	678
Gross Unrealized Depreciation
Less than 12 months	(1)	(11)
Greater than 12 months	0	0
Total	(1)	(11)
Foreign government securities
Fair Value
Less than 12 months	691	851
Greater than 12 months	720	828
Total	1,411	1,679
Gross Unrealized Depreciation
Less than 12 months	(14)	(35)
Greater than 12 months	(86)	(112)
Total	(100)	(147)
Foreign corporate securities
Fair Value
Less than 12 months	1,026	2,484
Greater than 12 months	1,540	1,785
Total	2,566	4,269
Gross Unrealized Depreciation
Less than 12 months	(24)	(61)
Greater than 12 months	(133)	(218)
Total	(157)	(279)
Securities where an allowance for credit loss was recorded
Fair Value
Less than 12 months	2	17
Greater than 12 months	15	0
Total	17	17
Gross Unrealized Depreciation
Less than 12 months	0	(1)
Greater than 12 months	0	0
Total	$ (1)	$ (1)

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