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INVESTMENTS - Schedule of Components of Net Investment Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	$ 504	$ 416	$ 1,506	$ 1,056
Funds held interest income (expense)	5	5	20	7
Future policy benefit reserve income (expense)	1	0	0	(1)
Gross investment income	510	420	1,525	1,063
Investment expenses	13	14	44	41
Net investment income	496	406	1,481	1,023
Fixed maturities
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	378	299	1,099	822
Equity securities
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	1	1	3	3
Short-term investments and cash
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	54	41	135	92
Limited partnerships
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	36	60	183	98
Other
Debt Securities, Available-for-Sale [Line Items]
Gross investment income before adjustments	$ 36	$ 15	$ 85	$ 42

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Gross Investment Income Before Adjustment

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Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.

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