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Reinsurance (Schedule Of Assets In Support Of Reserves) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Ceded Credit Risk [Line Items] |  |  |  |  |  |  |  |  |  |
Fixed maturity AFS securities | $ 99,736 | $ 97,572 | $ 103,317 | $ 110,663 | $ 118,711 | $ 122,085 | $ 122,215 | $ 117,313 |  |
Trading securities | 3,498 | 3,580 | 3,803 | 4,364 | 4,460 | 4,170 | 4,211 | 4,344 |  |
Equity securities | 427 | 427 | 411 | 399 | 375 | 264 | 195 | 144 |  |
Mortgage loans on real estate | 18,301 | 18,066 | 17,922 | 17,892 | 17,991 | 17,730 | 17,586 | 17,255 |  |
Derivative investments | 3,594 | 3,455 | 3,167 | 4,573 | 5,697 | 5,075 | 4,730 | 3,482 |  |
Other investments | 3,739 | 3,813 | 4,078 | 4,122 | 4,288 | 4,066 | 3,948 | 3,547 |  |
Cash and invested cash | 3,343 | 1,472 | 1,567 | 1,960 | 2,612 | 2,614 | 2,389 | 1,350 | $ 1,708 | $ 2,563
Accrued investment income | 1,253 | 1,283 | 1,226 | 1,247 | 1,189 | 1,297 | 1,254 | 1,301 |  |
Other assets | 20,708 | $ 19,991 | $ 18,137 | $ 18,467 | 18,519 | $ 18,076 | $ 18,125 | $ 18,264 |  |
Athene Holding Ltd. [Member] |  |  |  |  |  |  |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |  |  |  |  |  |  |
Fixed maturity AFS securities | 474 |  |  |  | 744 |  |  |  |  |
Trading securities | 2,644 |  |  |  | 3,399 |  |  |  |  |
Equity securities | 60 |  |  |  | 54 |  |  |  |  |
Mortgage loans on real estate | 487 |  |  |  | 739 |  |  |  |  |
Derivative investments | 39 |  |  |  | 93 |  |  |  |  |
Other investments | 42 |  |  |  | 227 |  |  |  |  |
Cash and invested cash | 26 |  |  |  | 110 |  |  |  |  |
Accrued investment income | 35 |  |  |  | 33 |  |  |  |  |
Other assets | 2 |  |  |  | 5 |  |  |  |  |
Total | 3,809 |  |  |  | 5,404 |  |  |  |  |
Commercial [Member] |  |  |  |  |  |  |  |  |  |
Ceded Credit Risk [Line Items] |  |  |  |  |  |  |  |  |  |
Mortgage loans on real estate | $ 16,903 |  |  |  | $ 17,089 |  |  |  |  |

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