Annual report [Section 13 and 15(d), not S-K Item 405]

Outstanding Loans and Leases and Allowance for Credit Losses - Loan Modifications to Borrowers in Financial Difficulty, Narrative (Details)

v3.25.0.1
Outstanding Loans and Leases and Allowance for Credit Losses - Loan Modifications to Borrowers in Financial Difficulty, Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Trial Modifications | Minimum      
Financing Receivable, Modified [Line Items]      
Term for contractual payments 3 months    
Trial Modifications | Maximum      
Financing Receivable, Modified [Line Items]      
Term for contractual payments 4 months    
Consumer real estate      
Financing Receivable, Modified [Line Items]      
Troubled debt restructurings entering payment default that were modified during the preceding twelve months     $ 216
Real estate acquired through foreclosure $ 60 $ 83  
Loans with formal foreclosure proceeding in process 464 633  
Reclassified consumer real estate loans 89 106  
Total $ 264 $ 671  
Total financing receivable percentage 0.10% 0.26%  
Total $ 264 $ 671  
Consumer real estate | Current      
Financing Receivable, Modified [Line Items]      
Total 151 392  
Consumer real estate | 30–89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 56 106  
Consumer real estate | 90+ Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 57 173  
Consumer real estate | Trial Modifications      
Financing Receivable, Modified [Line Items]      
Troubled debt restructurings entering payment default that were modified during the preceding twelve months     25
Consumer real estate | Permanent Modification      
Financing Receivable, Modified [Line Items]      
Total 217 185  
Consumer real estate | Forbearance and Other Payment Plans      
Financing Receivable, Modified [Line Items]      
Total $ 47 486  
Consumer real estate | Residential Mortgage And Home Equity Loan | Permanent Modification      
Financing Receivable, Modified [Line Items]      
Modified term 30 years    
Consumer real estate | Residential Mortgage      
Financing Receivable, Modified [Line Items]      
Total $ 232 $ 583  
Total financing receivable percentage 0.10% 0.26%  
Total $ 232 $ 583  
Consumer real estate | Residential Mortgage | Current      
Financing Receivable, Modified [Line Items]      
Total 123 334  
Consumer real estate | Residential Mortgage | 30–89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 54 101  
Consumer real estate | Residential Mortgage | 90+ Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 55 148  
Consumer real estate | Residential Mortgage | Permanent Modification      
Financing Receivable, Modified [Line Items]      
Total $ 186 $ 154  
Weighted-average Interest Rate Reduction 1.25% 1.41%  
Weighted-average duration 9 years 7 months 6 days 9 years 10 months 24 days  
Consumer real estate | Residential Mortgage | Permanent Modification | Minimum      
Financing Receivable, Modified [Line Items]      
Modified term 1 year    
Consumer real estate | Residential Mortgage | Permanent Modification | Maximum      
Financing Receivable, Modified [Line Items]      
Modified term 20 years    
Consumer real estate | Residential Mortgage | Forbearance and Other Payment Plans      
Financing Receivable, Modified [Line Items]      
Total $ 46 $ 429  
Weighted-average duration 7 months 8 months  
Consumer real estate | Home equity      
Financing Receivable, Modified [Line Items]      
Troubled debt restructurings entering payment default that were modified during the preceding twelve months $ 128 $ 287  
Total $ 32 $ 88  
Total financing receivable percentage 0.12% 0.34%  
Total $ 32 $ 88  
Consumer real estate | Home equity | Current      
Financing Receivable, Modified [Line Items]      
Total 28 58  
Consumer real estate | Home equity | 30–89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 2 5  
Consumer real estate | Home equity | 90+ Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 2 25  
Consumer real estate | Home equity | Permanent Modification      
Financing Receivable, Modified [Line Items]      
Total $ 31 $ 31  
Weighted-average Interest Rate Reduction 2.61% 2.74%  
Weighted-average duration 17 years 8 months 12 days 17 years 8 months 12 days  
Consumer real estate | Home equity | Permanent Modification | Minimum      
Financing Receivable, Modified [Line Items]      
Modified term 1 year    
Consumer real estate | Home equity | Permanent Modification | Maximum      
Financing Receivable, Modified [Line Items]      
Modified term 20 years    
Consumer real estate | Home equity | Forbearance and Other Payment Plans      
Financing Receivable, Modified [Line Items]      
Total $ 1 $ 57  
Weighted-average duration   9 months  
Credit card and other consumer      
Financing Receivable, Modified [Line Items]      
Total $ 650 $ 598  
Total financing receivable percentage 0.31% 0.29%  
Weighted-average Interest Rate Reduction 18.89% 19.02%  
Total $ 650 $ 598  
Credit card and other consumer | Current      
Financing Receivable, Modified [Line Items]      
Total 546 491  
Credit card and other consumer | 30–89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 58 59  
Credit card and other consumer | 90+ Days Past Due      
Financing Receivable, Modified [Line Items]      
Total $ 46 48  
Credit card and other consumer | Interest Rate Reduction      
Financing Receivable, Modified [Line Items]      
Term for contractual payments 60 months    
Credit card and other consumer | Interest Rate Reduction | Minimum      
Financing Receivable, Modified [Line Items]      
Term for contractual payments 6 months    
Credit card and other consumer | Interest Rate Reduction | Maximum      
Financing Receivable, Modified [Line Items]      
Term for contractual payments 72 months    
Credit card and other consumer | Principal Forgiveness      
Financing Receivable, Modified [Line Items]      
Total $ 113 61  
Commercial      
Financing Receivable, Modified [Line Items]      
Total $ 3,948 $ 3,278  
Total financing receivable percentage 0.67% 0.59%  
Total $ 3,948 $ 3,278  
Lending commitments     $ 358
Commercial | Current      
Financing Receivable, Modified [Line Items]      
Total 3,473 2,780  
Commercial | 30–89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 160 128  
Commercial | 90+ Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 315 370  
Commercial | Interest Rate Reduction      
Financing Receivable, Modified [Line Items]      
Total 100 24  
Commercial | Payment Deferral      
Financing Receivable, Modified [Line Items]      
Total 706 446  
Commercial | Commercial loans      
Financing Receivable, Modified [Line Items]      
Troubled debt restructurings entering payment default that were modified during the preceding twelve months $ 102 $ 159  
Weighted-average duration 1 year 8 months 12 days 1 year 7 months 6 days  
Lending commitments $ 1,300 $ 1,200  
Commercial | Commercial loans | Forbearance Program      
Financing Receivable, Modified [Line Items]      
Weighted-average duration 9 months 9 months  
Commercial | Commercial loans | Payment Deferral | Minimum      
Financing Receivable, Modified [Line Items]      
Weighted-average duration 8 months    
Commercial | Commercial loans | Payment Deferral | Maximum      
Financing Receivable, Modified [Line Items]      
Weighted-average duration 24 months