v3.25.4
Variable Interest Entities Affordable Housing Tax Credit Investments (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Variable Interest Entity [Line Items]      
InvestmentProgramProportionalAmortizationMethodElectedIncomeTaxCreditAndOtherIncomeTaxBenefitBeforeAmortizationStatementOfCashFlowsExtensibleEnumerationNotDisclosedFlag Tax credits and other tax benefits recognized Tax credits and other tax benefits recognized Tax credits and other tax benefits recognized
Tax Credit Investments | Variable Interest Entity, Not Primary Beneficiary      
Variable Interest Entity [Line Items]      
Tax credit investments included in other assets $ 1,608 $ 1,471  
Unfunded tax credit commitments included in other liabilities 567 590  
Loans and letters of credit commitments 643 663  
Funded portion of loans and letters of credit commitments 328 336  
Tax credits and other tax benefits recognized 229 236 $ 207
Tax credit amortization expense included in provision for income taxes $ 193 $ 188 $ 166
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration] Other assets Other assets  
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration] Income tax expense Income tax expense Income tax expense
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] Income tax expense Income tax expense Income tax expense
InvestmentProgramProportionalAmortizationMethodAppliedIncomeTaxCreditAndOtherTaxBenefitAmortizationStatementOfCashFlowsExtensibleEnumerationNotDisclosedFlag Tax credit amortization expense included in income tax expense Tax credit amortization expense included in income tax expense Tax credit amortization expense included in income tax expense