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Income Tax (Net Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Jan. 01, 2021
Deferred tax assets and liabilities |  |  |
Tax Credit Carryforward, Amount | $ 82 | $ 590 |
Deferred income tax assets: |  |  |
Policyholder liabilities and receivables | 3,476 | 758 |
Net operating loss carryforwards (1) | 256 | 238 |
Employee benefits | 523 | 475 |
Capital loss carryforwards | 29 | 15 |
Tax credit carryforwards (2) | 82 | 590 |
Net unrealized investment losses | 4,308 | 5,946 |
Litigation-related and government mandated | 101 | 90 |
Other | 393 | 67 |
Total gross deferred income tax assets | 9,168 | 8,179 |
Less: Valuation allowance (1) | 496 | 291 |
Total net deferred income tax assets | 8,672 | 7,888 |
Deferred income tax liabilities: |  |  |
Investments, including derivatives | 2,054 | 1,691 |
Intangibles | 1,004 | 1,096 |
DAC | 3,929 | 3,612 |
Total deferred income tax liabilities | 6,987 | 6,399 |
Deferred Tax Assets, Net, Total | 1,685 | 1,489 |
Deferred Tax Assets, Net [Abstract] |  |  |
Deferred income tax liability | 927 | $ 950 | $ 4,723
Certain State and Foreign Net Operating Loss Carryforwards |  |  |
Deferred tax assets and liabilities |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 256 |  |
Enactment of Bermuda Corporate Income Tax |  |  |
Deferred tax assets and liabilities |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ 198 |  |

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