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Other Earning Assets (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract] |  |  |
Equity Securities, FV-NI | $ 813 | $ 529 |
Equity Securities, FV-NI, Unrealized Loss |  | 45 |
Equity Securities, FV-NI, Unrealized Gain | 15 |  | $ 20
Other Miscellaneous Earning Assets | $ 152 | $ 326 |

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