v3.25.2
Fair Value (Fair Value Measurements - Recurring Quantitative Information) (Details)
$ in Millions
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment securities – available-for-sale $ 67,136 $ 62,039
Mortgage servicing rights 3,467 3,711
Financial derivatives - Swaps related to sales of certain Visa Class B common shares (2,053) (3,168)
Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment securities – available-for-sale 67,136 62,039
Loans, fair value 1,129 1,156
Equity investments 3,097 3,132
Financial derivatives - Swaps related to sales of certain Visa Class B common shares (4,478) (5,495)
Recurring assets - fair value 84,523 77,246
Recurring liabilities - fair value 11,627 6,999
Residential mortgage-backed non-agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment securities – available-for-sale 581 603
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity investments 2,232 2,111
Financial derivatives - Swaps related to sales of certain Visa Class B common shares (96) (143)
Insignificant assets, net of liabilities fair value disclosure 15 45
Total recurring assets net of recurring liabilities - fair value 7,070 7,094
Level 3 | Consumer Portfolio Segment | Residential real estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans, fair value 75 73
Level 3 | Consumer Portfolio Segment | Loans - Residential real estate - Uninsured    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans, fair value 489 504
Level 3 | Consumer Portfolio Segment | Loans - Home equity - First-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans, fair value 13 14
Level 3 | Consumer Portfolio Segment | Loans - Home equity - Second-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans, fair value 74 79
Level 3 | Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment securities – available-for-sale 805 853
Loans, fair value 651 670
Equity investments 2,232 2,111
Financial derivatives - Swaps related to sales of certain Visa Class B common shares (109) (150)
Recurring assets - fair value 7,308 7,431
Recurring liabilities - fair value 238 337
Level 3 | Commercial mortgage loans held for sale    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans held for sale, fair value   4
Level 3 | Residential mortgage-backed non-agency securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment securities – available-for-sale 581 603
Level 3 | Asset-backed    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investment securities – available-for-sale 90 93
Level 3 | Residential mortgage servicing rights    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans held for sale, fair value 130  
Mortgage servicing rights 2,457 2,626
Level 3 | Commercial mortgage servicing rights    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Mortgage servicing rights $ 1,010 $ 1,085
Spread over the benchmark curve | Level 3 | Commercial mortgage loans held for sale | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input   0.0560
Spread over the benchmark curve | Level 3 | Commercial mortgage loans held for sale | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input   0.1075
Spread over the benchmark curve | Level 3 | Commercial mortgage loans held for sale | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input   0.0970
Spread over the benchmark curve | Level 3 | Residential mortgage-backed non-agency securities | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.0183 0.0216
Spread over the benchmark curve | Level 3 | Asset-backed | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.0176 0.0170
Spread over the benchmark curve | Level 3 | Residential mortgage servicing rights | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.0122 0.0381
Spread over the benchmark curve | Level 3 | Residential mortgage servicing rights | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.4577 0.2202
Spread over the benchmark curve | Level 3 | Residential mortgage servicing rights | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.0754 0.0755
Constant prepayment rate | Level 3 | Residential mortgage-backed non-agency securities | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.010 0.010
Constant prepayment rate | Level 3 | Residential mortgage-backed non-agency securities | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.279 0.279
Constant prepayment rate | Level 3 | Residential mortgage-backed non-agency securities | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.035 0.042
Constant prepayment rate | Level 3 | Asset-backed | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.010 0.010
Constant prepayment rate | Level 3 | Asset-backed | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.080 0.080
Constant prepayment rate | Level 3 | Asset-backed | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.041 0.038
Constant prepayment rate | Level 3 | Residential mortgage servicing rights | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.000 0.000
Constant prepayment rate | Level 3 | Residential mortgage servicing rights | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.366 0.403
Constant prepayment rate | Level 3 | Residential mortgage servicing rights | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.067 0.064
Constant prepayment rate | Level 3 | Commercial mortgage servicing rights | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.043 0.043
Constant prepayment rate | Level 3 | Commercial mortgage servicing rights | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.075 0.074
Constant prepayment rate | Level 3 | Commercial mortgage servicing rights | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.045 0.044
Constant default rate | Level 3 | Residential mortgage-backed non-agency securities | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.000 0.000
Constant default rate | Level 3 | Residential mortgage-backed non-agency securities | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.120 0.120
Constant default rate | Level 3 | Residential mortgage-backed non-agency securities | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.017 0.019
Constant default rate | Level 3 | Asset-backed | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.000 0.000
Constant default rate | Level 3 | Asset-backed | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.074 0.071
Constant default rate | Level 3 | Asset-backed | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.015 0.015
Loss severity | Level 3 | Minimum | Consumer Portfolio Segment | Loans - Residential real estate - Uninsured    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.000 0.000
Loss severity | Level 3 | Minimum | Consumer Portfolio Segment | Loans - Home equity - First-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.000 0.000
Loss severity | Level 3 | Maximum | Consumer Portfolio Segment | Loans - Residential real estate - Uninsured    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 1.000 1.000
Loss severity | Level 3 | Maximum | Consumer Portfolio Segment | Loans - Home equity - First-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 1.000 1.000
Loss severity | Level 3 | Weighted Average | Consumer Portfolio Segment | Residential real estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.060 0.060
Loss severity | Level 3 | Weighted Average | Consumer Portfolio Segment | Loans - Residential real estate - Uninsured    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.047 0.050
Loss severity | Level 3 | Weighted Average | Consumer Portfolio Segment | Loans - Home equity - First-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.121 0.123
Loss severity | Level 3 | Residential mortgage-backed non-agency securities | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.150 0.150
Loss severity | Level 3 | Residential mortgage-backed non-agency securities | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 1.000 0.690
Loss severity | Level 3 | Residential mortgage-backed non-agency securities | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.421 0.424
Loss severity | Level 3 | Asset-backed | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.350 0.350
Loss severity | Level 3 | Asset-backed | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 1.000 1.000
Loss severity | Level 3 | Asset-backed | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, measurement input 0.436 0.453
Loss severity | Level 3 | Residential mortgage servicing rights | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.0  
Loss severity | Level 3 | Residential mortgage servicing rights | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 1.000  
Loss severity | Level 3 | Residential mortgage servicing rights | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.052  
Cumulative default rate | Level 3 | Minimum | Consumer Portfolio Segment | Loans - Residential real estate - Uninsured    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.036 0.036
Cumulative default rate | Level 3 | Minimum | Consumer Portfolio Segment | Loans - Home equity - First-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.036 0.036
Cumulative default rate | Level 3 | Maximum | Consumer Portfolio Segment | Loans - Residential real estate - Uninsured    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 1.000 1.000
Cumulative default rate | Level 3 | Maximum | Consumer Portfolio Segment | Loans - Home equity - First-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 1.000 1.000
Cumulative default rate | Level 3 | Weighted Average | Consumer Portfolio Segment | Loans - Residential real estate - Uninsured    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.513 0.525
Cumulative default rate | Level 3 | Weighted Average | Consumer Portfolio Segment | Loans - Home equity - First-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.510 0.516
Cumulative default rate | Level 3 | Residential mortgage servicing rights | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.036  
Cumulative default rate | Level 3 | Residential mortgage servicing rights | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 1.000  
Cumulative default rate | Level 3 | Residential mortgage servicing rights | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.373  
Discount rate | Level 3 | Minimum | Consumer Portfolio Segment | Loans - Residential real estate - Uninsured    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.055 0.055
Discount rate | Level 3 | Minimum | Consumer Portfolio Segment | Loans - Home equity - First-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.055 0.055
Discount rate | Level 3 | Maximum | Consumer Portfolio Segment | Loans - Residential real estate - Uninsured    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.075 0.075
Discount rate | Level 3 | Maximum | Consumer Portfolio Segment | Loans - Home equity - First-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.075 0.075
Discount rate | Level 3 | Weighted Average | Consumer Portfolio Segment | Residential real estate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.069 0.072
Discount rate | Level 3 | Weighted Average | Consumer Portfolio Segment | Loans - Residential real estate - Uninsured    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.057 0.057
Discount rate | Level 3 | Weighted Average | Consumer Portfolio Segment | Loans - Home equity - First-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.060 0.061
Discount rate | Level 3 | Residential mortgage servicing rights | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.055  
Discount rate | Level 3 | Residential mortgage servicing rights | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.090  
Discount rate | Level 3 | Residential mortgage servicing rights | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.060  
Discount rate | Level 3 | Commercial mortgage servicing rights | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.092 0.096
Discount rate | Level 3 | Commercial mortgage servicing rights | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.110 0.115
Discount rate | Level 3 | Commercial mortgage servicing rights | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing asset, measurement input 0.108 0.112
Credit and liquidity discount | Level 3 | Minimum | Consumer Portfolio Segment | Loans - Home equity - Second-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.002 0.003
Credit and liquidity discount | Level 3 | Maximum | Consumer Portfolio Segment | Loans - Home equity - Second-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 1.000 1.000
Credit and liquidity discount | Level 3 | Weighted Average | Consumer Portfolio Segment | Loans - Home equity - Second-lien    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing receivable, measurement input 0.403 0.412
Multiple of earnings | Level 3 | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities, measurement input 0.055 0.055
Multiple of earnings | Level 3 | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities, measurement input 0.267 0.267
Multiple of earnings | Level 3 | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities, measurement input 0.105 0.105
Estimated Conversion Factor | Level 3 | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability, measurement input 1.53 1.54
Estimated Annual Growth Rate | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liability, measurement input 0.160 0.160