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INVESTMENTS - Schedule of Amortized Cost and Fair Value of Fixed Maturity Securities, by Contractual Maturity (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Amortized Cost
Due in one year or less	$ 1,423	$ 1,116
Due after one year through five years	10,521	8,774
Due after five years through ten years	6,666	4,764
Due after ten years	1,926	1,826
Amortized Cost	34,049	29,934
Fair Value
Due in one year or less	1,390	1,080
Due after one year through five years	10,558	8,480
Due after five years through ten years	6,701	4,523
Due after ten years	1,860	1,723
Fair Value	33,912	28,908
Amortized Cost
Due in one year or less	5	7
Due after one year through five years	88	67
Due after five years through ten years	4	37
Due after ten years	149	150
Amortized Cost	610	765
Fair Value
Due in one year or less	5	7
Due after one year through five years	89	67
Due after five years through ten years	4	35
Due after ten years	156	152
Fair Value	613	759
Asset-backed securities
Amortized Cost
Amortized Cost	5,049	5,994
Fair Value
Fair Value	5,044	5,982
Amortized Cost
Amortized Cost	364	484
Fair Value
Fair Value	358	477
Agency commercial
Amortized Cost
Amortized Cost	402	0
Fair Value
Fair Value	409	0
Non-agency commercial
Amortized Cost
Amortized Cost	907	965
Fair Value
Fair Value	872	900
Agency residential
Amortized Cost
Amortized Cost	5,594	5,205
Fair Value
Fair Value	5,484	4,931
Non-agency residential
Amortized Cost
Amortized Cost	1,562	1,291
Fair Value
Fair Value	1,595	1,289
Commercial
Amortized Cost
Amortized Cost		965
Fair Value
Fair Value		900
Amortized Cost
Amortized Cost	1	21
Fair Value
Fair Value	$ 1	$ 21

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