INVESTMENTS - Schedule of Components of Net Investment Income (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	$ 577	$ 490
Funds held interest income (expense)	4	12
Future policy benefit reserve income (expense)	0	0
Gross investment income	581	502
Investment expenses	13	11
Net investment income	567	491
Fixed maturities
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	393	386
Equity securities
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	2	1
Short-term investments and cash
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	26	48
Limited partnerships
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	119	25
Other
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	$ 37	$ 30

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