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Variable Interest Entities Affordable Housing Tax Credit Investments (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Variable Interest Entity [Line Items]      
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration] Income tax expense Income tax expense Income tax expense
Tax Credit Investments | Variable Interest Entity, Not Primary Beneficiary      
Variable Interest Entity [Line Items]      
Tax credit investments included in other assets $ 1,471 $ 1,415  
Unfunded tax credit commitments included in other liabilities 590 592  
Loans and letters of credit commitments 663 730  
Funded portion of loans and letters of credit commitments 336 395  
Tax credits and other tax benefits recognized 236 207 $ 180
Tax credit amortization expense included in provision for income taxes $ 188 $ 166 $ 149