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Investments (Other Invested Assets - Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract] |  |  |
Carrying value of Tax Credits | $ 759 | $ 947 |
Losses From Tax Credits | $ 174 | $ 195 | $ 226

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