INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities by Contractual Maturity (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)
Due in one year or less
Fair Value
Less than 12 months	195	138
Greater than 12 months	617	544
Total	812	682
Gross Unrealized Depreciation
Less than 12 months	(6)	(5)
Greater than 12 months	(27)	(34)
Total	(33)	(39)
Due in one year through five years
Fair Value
Less than 12 months	1,471	3,503
Greater than 12 months	2,426	2,770
Total	3,898	6,273
Gross Unrealized Depreciation
Less than 12 months	(37)	(87)
Greater than 12 months	(178)	(249)
Total	(215)	(335)
Due in five years through ten years
Fair Value
Less than 12 months	889	1,850
Greater than 12 months	1,064	1,382
Total	1,953	3,232
Gross Unrealized Depreciation
Less than 12 months	(12)	(50)
Greater than 12 months	(128)	(220)
Total	(140)	(271)
Due after ten years
Fair Value
Less than 12 months	675	677
Greater than 12 months	478	487
Total	1,154	1,164
Gross Unrealized Depreciation
Less than 12 months	(21)	(32)
Greater than 12 months	(64)	(76)
Total	(85)	(107)
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)
Mortgage-backed securities
Fair Value
Less than 12 months	782	3,461
Greater than 12 months	2,398	2,008
Total	3,179	5,469
Gross Unrealized Depreciation
Less than 12 months	(11)	(129)
Greater than 12 months	(208)	(235)
Total	(219)	(364)
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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