INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities by Security Type (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Fair Value
Less than 12 months	$ 7,302	$ 10,604
Greater than 12 months	7,355	7,728
Total	14,656	18,332
Gross Unrealized Depreciation
Less than 12 months	(201)	(324)
Greater than 12 months	(720)	(833)
Total	(921)	(1,157)
No Recorded Allowance for Credit Losses
Fair Value
Less than 12 months	7,284	10,587
Greater than 12 months	7,355	7,728
Total	14,639	18,315
Gross Unrealized Depreciation
Less than 12 months	(200)	(323)
Greater than 12 months	(720)	(833)
Total	(920)	(1,156)
U.S. Treasury securities and obligations of U.S. government agencies and corporations
Fair Value
Less than 12 months	118	80
Greater than 12 months	345	398
Total	464	478
Gross Unrealized Depreciation
Less than 12 months	(4)	(1)
Greater than 12 months	(18)	(23)
Total	(22)	(24)
Obligations of U.S. states and political subdivisions
Fair Value
Less than 12 months	9	9
Greater than 12 months	37	40
Total	47	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	2,131	2,744
Greater than 12 months	2,113	2,132
Total	4,244	4,876
Gross Unrealized Depreciation
Less than 12 months	(47)	(76)
Greater than 12 months	(199)	(221)
Total	(245)	(297)
Asset-backed Securities
Fair Value
Less than 12 months	907	958
Greater than 12 months	246	537
Total	1,153	1,495
Gross Unrealized Depreciation
Less than 12 months	(12)	(20)
Greater than 12 months	(10)	(19)
Total	(22)	(39)
Commercial
Fair Value
Less than 12 months	41	53
Greater than 12 months	763	757
Total	803	810
Gross Unrealized Depreciation
Less than 12 months	(2)	(3)
Greater than 12 months	(52)	(63)
Total	(54)	(66)
Agency Residential
Fair Value
Less than 12 months	1,964	2,754
Greater than 12 months	1,164	1,226
Total	3,128	3,980
Gross Unrealized Depreciation
Less than 12 months	(83)	(115)
Greater than 12 months	(137)	(172)
Total	(221)	(287)
Non-agency Residential
Fair Value
Less than 12 months	299	654
Greater than 12 months	25	25
Total	324	678
Gross Unrealized Depreciation
Less than 12 months	(4)	(11)
Greater than 12 months	0	0
Total	(4)	(11)
Foreign government securities
Fair Value
Less than 12 months	667	851
Greater than 12 months	837	828
Total	1,505	1,679
Gross Unrealized Depreciation
Less than 12 months	(24)	(35)
Greater than 12 months	(106)	(112)
Total	(129)	(147)
Foreign corporate securities
Fair Value
Less than 12 months	1,148	2,484
Greater than 12 months	1,824	1,785
Total	2,972	4,269
Gross Unrealized Depreciation
Less than 12 months	(24)	(61)
Greater than 12 months	(192)	(218)
Total	(216)	(279)
Securities where an allowance for credit loss was recorded
Fair Value
Less than 12 months	17	17
Greater than 12 months	0	0
Total	17	17
Gross Unrealized Depreciation
Less than 12 months	(1)	(1)
Greater than 12 months	0	0
Total	$ (2)	$ (1)

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