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Variable Interest Entities (VIEs) (Impact Of VIEs On The Consolidated Statements Of Comprehensive Income) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Variable Interest Entity [Line Items]      
Other noninterest income $ 60 $ 83 $ 31
Provision for income taxes 190 263 325
Variable Interest Entity      
Variable Interest Entity [Line Items]      
Other noninterest income   (4) 0
Provision for income taxes (15) (17) (14)
Low income housing tax credits | Variable Interest Entity      
Variable Interest Entity [Line Items]      
Investment Program, Proportional Amortization Method, Applied, Amortization Expense 76 69 72
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit And Other Income Tax Benefit, Before Amortization Expense 75 65 68
Other tax benefits related to tax credit entities | Variable Interest Entity      
Variable Interest Entity [Line Items]      
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit And Other Income Tax Benefit, Before Amortization Expense $ 16 $ 21 $ 18