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Commitments and Contingent Liabilities Variable Interest Entities (Details)
$ in Millions
Mar. 31, 2024
USD ($)
Other Assets [Member]  
Variable Interest Entity [Line Items]  
Amortization Method Qualified Affordable Housing Project Investments $ 405
Other Liabilities [Member]  
Variable Interest Entity [Line Items]  
Qualified Affordable Housing Project Investments, Commitment $ 99