INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities - Available for Sale, by Contractual Maturity (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value
Less than 12 months	$ 3,360	$ 8,524
Greater than 12 months	8,210	2,698
Total	11,569	11,222
Gross Unrealized Depreciation
Less than 12 months	(194)	(591)
Greater than 12 months	(863)	(421)
Total	(1,057)	(1,013)
No Recorded Allowance for Credit Losses
Fair Value
Less than 12 months	3,359	8,522
Greater than 12 months	8,210	2,698
Total	11,569	11,220
Gross Unrealized Depreciation
Less than 12 months	(193)	(591)
Greater than 12 months	(862)	(421)
Total	(1,055)	(1,012)
Due in one year or less
Fair Value
Less than 12 months	96	463
Greater than 12 months	593	29
Total	688	491
Gross Unrealized Depreciation
Less than 12 months	(1)	(8)
Greater than 12 months	(15)	(4)
Total	(16)	(11)
Due in one year through five years
Fair Value
Less than 12 months	477	2,020
Greater than 12 months	2,447	936
Total	2,923	2,956
Gross Unrealized Depreciation
Less than 12 months	(20)	(143)
Greater than 12 months	(245)	(107)
Total	(265)	(250)
Due in five years through ten years
Fair Value
Less than 12 months	584	1,162
Greater than 12 months	1,098	395
Total	1,682	1,557
Gross Unrealized Depreciation
Less than 12 months	(30)	(148)
Greater than 12 months	(212)	(98)
Total	(242)	(246)
Due after ten years
Fair Value
Less than 12 months	816	439
Greater than 12 months	278	262
Total	1,094	701
Gross Unrealized Depreciation
Less than 12 months	(93)	(50)
Greater than 12 months	(58)	(64)
Total	(151)	(114)
Asset-backed securities
Fair Value
Less than 12 months	747	3,120
Greater than 12 months	2,177	436
Total	2,923	3,556
Gross Unrealized Depreciation
Less than 12 months	(20)	(138)
Greater than 12 months	(43)	(27)
Total	(63)	(165)
Mortgage-backed securities
Fair Value
Less than 12 months	640	1,318
Greater than 12 months	1,617	641
Total	2,257	1,959
Gross Unrealized Depreciation
Less than 12 months	(31)	(105)
Greater than 12 months	(288)	(122)
Total	(319)	(226)
Securities where an allowance for credit loss was recorded
Fair Value
Less than 12 months	0	2
Greater than 12 months	0	0
Total	1	2
Gross Unrealized Depreciation
Less than 12 months	(1)	(1)
Greater than 12 months	(1)	0
Total	$ (1)	$ (1)

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