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Derivatives (Embedded Derivatives) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Derivatives, Fair Value [Line Items] |  |  |  |  |
Embedded derivatives within liability host contracts | $ 531 |  | $ 531 |  | $ 649
Nonperformance Risk [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Net derivatives gains (losses) | 18 | $ (8) | 4 | $ (51) |
Ceded guaranteed minimum benefits | Premiums, reinsurance and other receivables |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Embedded derivatives within asset host contracts | 35 |  | 35 |  | 38
Direct guaranteed minimum benefits | Policyholder account balances |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Embedded derivatives within liability host contracts | 317 |  | 317 |  | 324
Assumed guaranteed minimum benefits | Policyholder account balances |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Embedded derivatives within liability host contracts | 97 |  | 97 |  | 98
Funds withheld and guarantees on reinsurance | Other liabilities |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Embedded derivatives within liability host contracts |  |  |  |  | 57
Fixed annuities with equity indexed returns [Member] | Policyholder account balances |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Embedded derivatives within liability host contracts | 142 |  | 142 |  | 165
Other guarantees | Policyholder account balances |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Embedded derivatives within liability host contracts | 0 |  | 0 |  | $ 5
Funds withheld and guarantees on reinsurance | Other liabilities |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Embedded derivatives within liability host contracts | $ (25) |  | $ (25) |  |

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