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Insurance (Separate Accounts - Narrative) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Schedule Separate Accounts [Line Items] |  |
Separate account assets | $ 146,038 | $ 179,873
Funding Agreements and Participating Close Out Contracts Included in Separate Accounts with a Guaranteed Minimum Return or Account Value |  |
Schedule Separate Accounts [Line Items] |  |
Average interest rate credited on separate accounts with a guaranteed minimum return or account value | 2.49% | 2.18%
Pass Through Separate Accounts |  |
Schedule Separate Accounts [Line Items] |  |
Separate account assets | $ 108,900 | $ 134,400
Separate Accounts With Minimum Return Or Account Value |  |
Schedule Separate Accounts [Line Items] |  |
Separate account assets | $ 37,100 | $ 45,500

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