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Investments (ACL for Fixed Maturity Securities AFS By Sector) (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, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance, beginning of period | $ 121 | $ 197 | $ 184 | $ 183
ACL not previously recorded | 40 | 10 | 54 | 46
Changes for securities with previously recorded ACL | 4 | (4) | 14 | (10)
Securities sold or exchanged | (3) | (21) | (90) | (37)
Allowance, end of period | 162 | 182 | 162 | 182
U.S. corporate |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance, beginning of period | 37 | 69 | 68 | 29
ACL not previously recorded | 27 | 0 | 41 | 36
Changes for securities with previously recorded ACL | (1) | 0 | 10 | 6
Securities sold or exchanged | (3) | (2) | (59) | (4)
Allowance, end of period | 60 | 67 | 60 | 67
Foreign corporate |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance, beginning of period | 2 | 2 | 2 | 5
ACL not previously recorded | 13 | 0 | 13 | 0
Changes for securities with previously recorded ACL | 0 | 0 | 0 | 0
Securities sold or exchanged | 0 | 0 | 0 | (3)
Allowance, end of period | 15 | 2 | 15 | 2
Foreign government |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance, beginning of period | 58 | 115 | 88 | 130
ACL not previously recorded | 0 | 0 | 0 | 0
Changes for securities with previously recorded ACL | 4 | (7) | (1) | (22)
Securities sold or exchanged | 0 | (19) | (25) | (19)
Allowance, end of period | 62 | 89 | 62 | 89
RMBS |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance, beginning of period | 1 | 0 | 1 | 0
ACL not previously recorded | 0 | 1 | 0 | 1
Changes for securities with previously recorded ACL | 0 | 0 | 0 | 0
Securities sold or exchanged | 0 | 0 | 0 | 0
Allowance, end of period | 1 | 1 | 1 | 1
ABS & CLO |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance, beginning of period | 9 | 0 | 7 | 0
ACL not previously recorded | 0 | 7 | 0 | 7
Changes for securities with previously recorded ACL | 1 | 0 | 3 | 0
Securities sold or exchanged | 0 | 0 | 0 | 0
Allowance, end of period | 10 | 7 | 10 | 7
CMBS |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items] |  |  |  |
Allowance, beginning of period | 14 | 11 | 18 | 19
ACL not previously recorded | 0 | 2 | 0 | 2
Changes for securities with previously recorded ACL | 0 | 3 | 2 | 6
Securities sold or exchanged | 0 | 0 | (6) | (11)
Allowance, end of period | $ 14 | $ 16 | $ 14 | $ 16

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