INVESTMENTS - Schedule of Components of Net Investment Income (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	$ 490	$ 465
Funds held interest income (expense)	12	6
Future policy benefit reserve income (expense)	0	0
Gross investment income	502	470
Investment expenses	11	13
Net investment income	491	457
Fixed maturities
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	386	352
Equity securities
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	1	1
Short-term investments and cash
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	48	38
Limited partnerships
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	25	54
Other
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	$ 30	$ 20

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