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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

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