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Fair Value (Recurring Fair Value Measurements) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | $ 281,043 | $ 281,412
Equity securities | 712 | 757
Unit-linked and FVO securities (1) | 10,672 | 10,331
Short-term investments (2) | 5,156 | 6,045
Derivative assets | 8,212 | 8,737
Market risk benefits, at estimated fair value | 372 | 286
Separate account assets | 139,504 | 144,634
Liabilities [Abstract] |  |
Derivative liabilities | 7,259 | 6,298
Embedded derivatives within liability host contracts (7) | 9 | 93
Market risk benefits, at estimated fair value | 2,581 | 3,179
Separate account liabilities | 139,504 | 144,634
Recurring |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 281,043 | 281,412
Equity securities | 712 | 757
Unit-linked and FVO securities (1) | 10,672 | 10,331
Short-term investments (2) | 4,834 | 5,797
Other investments | 1,110 | 1,386
Derivative assets | 8,212 | 8,737
Market risk benefits, at estimated fair value | 372 | 286
Reinsured MRB assets | 12 | 18
Separate account assets | 139,504 | 144,634
Total assets (6) | 446,471 | 453,358
Liabilities [Abstract] |  |
Derivative liabilities | 7,259 | 6,298
Embedded derivatives within liability host contracts (7) | 9 | 93
Market risk benefits, at estimated fair value | 2,581 | 3,179
Total liabilities | 9,851 | 9,578
Recurring | Interest rate contracts |  |
Assets [Abstract] |  |
Derivative assets | 3,005 | 3,675
Liabilities [Abstract] |  |
Derivative liabilities | 3,464 | 2,984
Recurring | Foreign currency exchange rate contracts |  |
Assets [Abstract] |  |
Derivative assets | 4,709 | 4,418
Liabilities [Abstract] |  |
Derivative liabilities | 3,452 | 2,744
Recurring | Credit contracts |  |
Assets [Abstract] |  |
Derivative assets | 215 | 236
Liabilities [Abstract] |  |
Derivative liabilities | 72 | 84
Recurring | Equity market contracts |  |
Assets [Abstract] |  |
Derivative assets | 283 | 408
Liabilities [Abstract] |  |
Derivative liabilities | 271 | 486
Recurring | Derivative Liabilities Within Separate Accounts |  |
Liabilities [Abstract] |  |
Separate account liabilities | 2 | 8
Recurring | U.S. corporate |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 79,374 | 80,717
Recurring | Foreign corporate |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 53,759 | 55,444
Recurring | Foreign government |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 40,250 | 45,489
Recurring | RMBS |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 34,421 | 29,096
Recurring | U.S. government and agency |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 33,428 | 32,252
Recurring | ABS & CLO |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 20,591 | 17,294
Recurring | Municipals |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 9,873 | 11,171
Recurring | CMBS |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 9,347 | 9,949
Recurring | Level 1 |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 16,675 | 15,330
Equity securities | 415 | 429
Unit-linked and FVO securities (1) | 7,306 | 7,520
Short-term investments (2) | 4,127 | 5,103
Other investments | 37 | 48
Derivative assets | 11 | 11
Market risk benefits, at estimated fair value | 0 | 0
Reinsured MRB assets | 0 | 0
Separate account assets | 63,979 | 66,229
Total assets (6) | 92,550 | 94,670
Liabilities [Abstract] |  |
Derivative liabilities | 7 | 16
Embedded derivatives within liability host contracts (7) | 0 | 0
Market risk benefits, at estimated fair value | 0 | 0
Total liabilities | 7 | 20
Recurring | Level 1 | Interest rate contracts |  |
Assets [Abstract] |  |
Derivative assets | 1 | 1
Liabilities [Abstract] |  |
Derivative liabilities | 1 | 5
Recurring | Level 1 | Foreign currency exchange rate contracts |  |
Assets [Abstract] |  |
Derivative assets | 1 | 2
Liabilities [Abstract] |  |
Derivative liabilities | 0 | 0
Recurring | Level 1 | Credit contracts |  |
Assets [Abstract] |  |
Derivative assets | 0 | 0
Liabilities [Abstract] |  |
Derivative liabilities | 0 | 0
Recurring | Level 1 | Equity market contracts |  |
Assets [Abstract] |  |
Derivative assets | 9 | 8
Liabilities [Abstract] |  |
Derivative liabilities | 6 | 11
Recurring | Level 1 | Derivative Liabilities Within Separate Accounts |  |
Liabilities [Abstract] |  |
Separate account liabilities | 0 | 4
Recurring | Level 1 | U.S. corporate |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 0 | 0
Recurring | Level 1 | Foreign corporate |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 0 | 0
Recurring | Level 1 | Foreign government |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 0 | 0
Recurring | Level 1 | RMBS |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 0 | 3
Recurring | Level 1 | U.S. government and agency |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 16,675 | 15,327
Recurring | Level 1 | ABS & CLO |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 0 | 0
Recurring | Level 1 | Municipals |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 0 | 0
Recurring | Level 1 | CMBS |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 0 | 0
Recurring | Level 2 |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 229,176 | 233,135
Equity securities | 61 | 79
Unit-linked and FVO securities (1) | 2,176 | 1,708
Short-term investments (2) | 702 | 667
Other investments | 63 | 363
Derivative assets | 8,184 | 8,688
Market risk benefits, at estimated fair value | 0 | 0
Reinsured MRB assets | 0 | 0
Separate account assets | 74,535 | 77,258
Total assets (6) | 314,897 | 321,898
Liabilities [Abstract] |  |
Derivative liabilities | 7,240 | 6,101
Embedded derivatives within liability host contracts (7) | 0 | 0
Market risk benefits, at estimated fair value | 0 | 0
Total liabilities | 7,242 | 6,105
Recurring | Level 2 | Interest rate contracts |  |
Assets [Abstract] |  |
Derivative assets | 3,004 | 3,674
Liabilities [Abstract] |  |
Derivative liabilities | 3,463 | 2,805
Recurring | Level 2 | Foreign currency exchange rate contracts |  |
Assets [Abstract] |  |
Derivative assets | 4,694 | 4,393
Liabilities [Abstract] |  |
Derivative liabilities | 3,440 | 2,737
Recurring | Level 2 | Credit contracts |  |
Assets [Abstract] |  |
Derivative assets | 215 | 228
Liabilities [Abstract] |  |
Derivative liabilities | 72 | 84
Recurring | Level 2 | Equity market contracts |  |
Assets [Abstract] |  |
Derivative assets | 271 | 393
Liabilities [Abstract] |  |
Derivative liabilities | 265 | 475
Recurring | Level 2 | Derivative Liabilities Within Separate Accounts |  |
Liabilities [Abstract] |  |
Separate account liabilities | 2 | 4
Recurring | Level 2 | U.S. corporate |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 67,333 | 67,003
Recurring | Level 2 | Foreign corporate |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 39,295 | 40,813
Recurring | Level 2 | Foreign government |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 40,209 | 45,438
Recurring | Level 2 | RMBS |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 32,771 | 27,495
Recurring | Level 2 | U.S. government and agency |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 16,753 | 16,925
Recurring | Level 2 | ABS & CLO |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 14,755 | 15,191
Recurring | Level 2 | Municipals |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 9,866 | 11,171
Recurring | Level 2 | CMBS |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 8,194 | 9,099
Recurring | Level 3 |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 35,192 | 32,947
Equity securities | 236 | 249
Unit-linked and FVO securities (1) | 1,190 | 1,103
Short-term investments (2) | 5 | 27
Other investments | 1,010 | 975
Derivative assets | 17 | 38
Market risk benefits, at estimated fair value | 372 | 286
Reinsured MRB assets | 12 | 18
Separate account assets | 990 | 1,147
Total assets (6) | 39,024 | 36,790
Liabilities [Abstract] |  |
Derivative liabilities | 12 | 181
Embedded derivatives within liability host contracts (7) | 9 | 93
Market risk benefits, at estimated fair value | 2,581 | 3,179
Total liabilities | 2,602 | 3,453
Recurring | Level 3 | Interest rate contracts |  |
Assets [Abstract] |  |
Derivative assets | 0 | 0
Liabilities [Abstract] |  |
Derivative liabilities | 0 | 174
Recurring | Level 3 | Foreign currency exchange rate contracts |  |
Assets [Abstract] |  |
Derivative assets | 14 | 23
Liabilities [Abstract] |  |
Derivative liabilities | 12 | 7
Recurring | Level 3 | Credit contracts |  |
Assets [Abstract] |  |
Derivative assets | 0 | 8
Liabilities [Abstract] |  |
Derivative liabilities | 0 | 0
Recurring | Level 3 | Equity market contracts |  |
Assets [Abstract] |  |
Derivative assets | 3 | 7
Liabilities [Abstract] |  |
Derivative liabilities | 0 | 0
Recurring | Level 3 | Derivative Liabilities Within Separate Accounts |  |
Liabilities [Abstract] |  |
Separate account liabilities | 0 | 0
Recurring | Level 3 | U.S. corporate |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 12,041 | 13,714
Recurring | Level 3 | Foreign corporate |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 14,464 | 14,631
Recurring | Level 3 | Foreign government |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 41 | 51
Recurring | Level 3 | RMBS |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 1,650 | 1,598
Recurring | Level 3 | U.S. government and agency |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 0 | 0
Recurring | Level 3 | ABS & CLO |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 5,836 | 2,103
Recurring | Level 3 | Municipals |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 7 | 0
Recurring | Level 3 | CMBS |  |
Assets [Abstract] |  |
Estimated Fair Value of Fixed Maturity Securities AFS | 1,153 | 850
Other limited partnership interests | Recurring |  |
Assets [Abstract] |  |
Investments, Fair Value Disclosure | $ 50 | $ 52

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