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Insurance (Fund Groupings) (Details) - Variable Annuity and Variable Life - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Fair Value, Separate Account Investment [Line Items] |  |
Fund Groupings | $ 37,873 | $ 51,998
Equity |  |
Fair Value, Separate Account Investment [Line Items] |  |
Fund Groupings | 20,875 | 29,346
Balanced |  |
Fair Value, Separate Account Investment [Line Items] |  |
Fund Groupings | 12,657 | 17,393
Bond |  |
Fair Value, Separate Account Investment [Line Items] |  |
Fund Groupings | 4,036 | 5,041
Money Market |  |
Fair Value, Separate Account Investment [Line Items] |  |
Fund Groupings | $ 305 | $ 218

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