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Commitments and Contingent Liabilities Variable Interest Entities (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Other Assets [Member] |  |
Variable Interest Entity [Line Items] |  |
Amortization Method Qualified Affordable Housing Project Investments | $ 413 | $ 390
Other Liabilities [Member] |  |
Variable Interest Entity [Line Items] |  |
Qualified Affordable Housing Project Investments, Commitment | $ 100 | $ 81

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