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Separate Accounts - Narrative (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Schedule Of Fees Charged To Separate Accounts [Line Items] |  |
Separate account assets | $ 144,634 | $ 146,038
Pass Through Separate Accounts |  |
Schedule Of Fees Charged To Separate Accounts [Line Items] |  |
Separate account assets | 115,600 | 108,900
Separate Accounts With Minimum Return Or Account Value |  |
Schedule Of Fees Charged To Separate Accounts [Line Items] |  |
Separate account assets | $ 29,000 | $ 37,100
Funding Agreements and Participating Close Out Contracts Included in Separate Accounts with a Guaranteed Minimum Return or Account Value |  |
Schedule Of Fees Charged To Separate Accounts [Line Items] |  |
Average interest rate credited on separate accounts with a guaranteed minimum return or account value | 2.60% | 2.50%

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