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Net Investment Income And Investment Related Gains (Losses) (Details) - USD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 24, 2022	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2023
Net Investment Income [Line Items]
Total net investment income	$ 513	$ 700	$ 3,628	$ 1,388
Total investment related gains (losses), net	(7)	(39)	(346)	(1)
Available-for-sale fixed maturity securities
Net Investment Income [Line Items]
Total net investment income	223	336	1,913	702
Total investment related gains (losses), net	(13)	(59)	(185)	(70)
Equity securities
Net Investment Income [Line Items]
Total net investment income	1	2	31	8
Total investment related gains (losses), net	(13)	49	(48)	97
Mortgage loans
Net Investment Income [Line Items]
Total net investment income	123	181	623	300
Total investment related gains (losses), net	4	(35)	(83)	(26)
Private loans
Net Investment Income [Line Items]
Total net investment income	0	0	216	16
Total investment related gains (losses), net	0	0	(28)	(9)
Real estate
Net Investment Income [Line Items]
Total net investment income	6	5	50	13
Real estate partnerships
Net Investment Income [Line Items]
Total net investment income	105	55	23	29
Total investment related gains (losses), net	0	0	(1)	0
Investment funds
Net Investment Income [Line Items]
Total net investment income	35	34	307	81
Total investment related gains (losses), net	0	0	(21)	0
Policy loans
Net Investment Income [Line Items]
Total net investment income	0	0	18	0
Short-term investments
Net Investment Income [Line Items]
Total net investment income	4	58	204	187
Other
Net Investment Income [Line Items]
Total net investment income	16	29	243	52
Investment real estate
Net Investment Income [Line Items]
Total investment related gains (losses), net	11	7	(11)	(4)
Short-term investments and other invested assets
Net Investment Income [Line Items]
Total investment related gains (losses), net	$ 4	$ (1)	$ 31	$ 11

X

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Amount of realized and unrealized gain (loss) on investment.

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