v3.25.2
Loans and allowance for loan losses - Summary of Current, Past Due and Nonaccrual Loans (Detail) - USD ($)
$ in Millions
Jun. 30, 2025
Mar. 31, 2025
Jan. 01, 2025
Dec. 31, 2024
Jun. 30, 2024
Mar. 31, 2024
Jan. 01, 2024
Financing Receivable, Past Due [Line Items]              
Amortized Cost $ 1,573 $ 1,540 $ 1,690 $ 1,690 $ 2,024 $ 2,302 $ 2,166
Total [1] 136,116     135,581      
Unamortized loan cost (fee) and purchase premium (discount) (301)     277      
Financing receivable, accrued interest, before allowance for credit loss 617     628      
Current              
Financing Receivable, Past Due [Line Items]              
Loans 132,679     131,898      
30-89 Days Past Due              
Financing Receivable, Past Due [Line Items]              
Loans 1,368     1,655      
Accruing Loans Past Due 90 Days or More              
Financing Receivable, Past Due [Line Items]              
Loans 496     338      
Commercial and industrial              
Financing Receivable, Past Due [Line Items]              
Amortized Cost 787 662 696 696 805 864 670
Total 61,660     61,481      
Commercial and industrial | Current              
Financing Receivable, Past Due [Line Items]              
Loans 60,632     60,374      
Commercial and industrial | 30-89 Days Past Due              
Financing Receivable, Past Due [Line Items]              
Loans 219     399      
Commercial and industrial | Accruing Loans Past Due 90 Days or More              
Financing Receivable, Past Due [Line Items]              
Loans 22     12      
Commercial Real Estate | Commercial              
Financing Receivable, Past Due [Line Items]              
Amortized Cost 376 394 468 468 707 855 869
Total 20,155     20,780      
Mortgage loans held for sale 361     310      
Commercial Real Estate | Commercial | Current              
Financing Receivable, Past Due [Line Items]              
Loans 19,447     20,054      
Commercial Real Estate | Commercial | 30-89 Days Past Due              
Financing Receivable, Past Due [Line Items]              
Loans 321     255      
Commercial Real Estate | Commercial | Accruing Loans Past Due 90 Days or More              
Financing Receivable, Past Due [Line Items]              
Loans 11     3      
Commercial Real Estate | Residential builder and developer              
Financing Receivable, Past Due [Line Items]              
Amortized Cost 1 1 2 2 2 3 3
Total 151     835      
Mortgage loans held for sale 661            
Commercial Real Estate | Residential builder and developer | Current              
Financing Receivable, Past Due [Line Items]              
Loans 150     830      
Commercial Real Estate | Residential builder and developer | 30-89 Days Past Due              
Financing Receivable, Past Due [Line Items]              
Loans 0     3      
Commercial Real Estate | Residential builder and developer | Accruing Loans Past Due 90 Days or More              
Financing Receivable, Past Due [Line Items]              
Loans 0     0      
Commercial Real Estate | Other commercial construction              
Financing Receivable, Past Due [Line Items]              
Amortized Cost 23 28 66 66 77 141 171
Total 4,261     5,149      
Commercial Real Estate | Other commercial construction | Current              
Financing Receivable, Past Due [Line Items]              
Loans 4,199     5,018      
Commercial Real Estate | Other commercial construction | 30-89 Days Past Due              
Financing Receivable, Past Due [Line Items]              
Loans 35     65      
Commercial Real Estate | Other commercial construction | Accruing Loans Past Due 90 Days or More              
Financing Receivable, Past Due [Line Items]              
Loans 4     0      
Commercial Real Estate | Other Revenue Portfolio Segment              
Financing Receivable, Past Due [Line Items]              
Mortgage loans held for sale 15            
Residential Real Estate | Residential              
Financing Receivable, Past Due [Line Items]              
Amortized Cost 265 284 279 279 260 255 270
Total 24,117     23,166      
Mortgage loans held for sale 222     211      
Residential Real Estate | Residential | Current              
Financing Receivable, Past Due [Line Items]              
Loans 22,796     21,853      
Total 22,796     21,853      
Residential Real Estate | Residential | 30-89 Days Past Due              
Financing Receivable, Past Due [Line Items]              
Loans 606     719      
Residential Real Estate | Residential | Accruing Loans Past Due 90 Days or More              
Financing Receivable, Past Due [Line Items]              
Loans 450     315      
Total 450     315      
Consumer | Home equity lines and loans              
Financing Receivable, Past Due [Line Items]              
Amortized Cost 75 78 81 81 79 87 81
Total 4,634     4,592      
Consumer | Home equity lines and loans | Current              
Financing Receivable, Past Due [Line Items]              
Loans 4,530     4,482      
Total 4,530     4,482      
Consumer | Home equity lines and loans | 30-89 Days Past Due              
Financing Receivable, Past Due [Line Items]              
Loans 29     29      
Consumer | Home equity lines and loans | Accruing Loans Past Due 90 Days or More              
Financing Receivable, Past Due [Line Items]              
Loans 0     0      
Total 0     0      
Consumer | Recreational finance              
Financing Receivable, Past Due [Line Items]              
Amortized Cost 25 26 31 31 25 30 36
Total 13,666     12,564      
Consumer | Recreational finance | Current              
Financing Receivable, Past Due [Line Items]              
Loans 13,555     12,429      
Total 13,555     12,429      
Consumer | Recreational finance | 30-89 Days Past Due              
Financing Receivable, Past Due [Line Items]              
Loans 86     104      
Consumer | Recreational finance | Accruing Loans Past Due 90 Days or More              
Financing Receivable, Past Due [Line Items]              
Loans 0     0      
Total 0     0      
Consumer | Automobile              
Financing Receivable, Past Due [Line Items]              
Amortized Cost 9 11 12 12 11 13 14
Total 5,260     4,794      
Consumer | Automobile | Current              
Financing Receivable, Past Due [Line Items]              
Loans 5,199     4,724      
Total 5,199     4,724      
Consumer | Automobile | 30-89 Days Past Due              
Financing Receivable, Past Due [Line Items]              
Loans 52     58      
Consumer | Automobile | Accruing Loans Past Due 90 Days or More              
Financing Receivable, Past Due [Line Items]              
Loans 0     0      
Total 0     0      
Consumer | Other              
Financing Receivable, Past Due [Line Items]              
Amortized Cost 12 $ 56 $ 55 55 $ 58 $ 54 $ 52
Total 2,212     2,220      
Consumer | Other | Current              
Financing Receivable, Past Due [Line Items]              
Loans 2,171     2,134      
Consumer | Other | 30-89 Days Past Due              
Financing Receivable, Past Due [Line Items]              
Loans 20     23      
Consumer | Other | Accruing Loans Past Due 90 Days or More              
Financing Receivable, Past Due [Line Items]              
Loans $ 9     $ 8      
[1] Loans of $2.5 billion and $1.5 billion at June 30, 2025 and December 31, 2024, respectively, were held in special purpose trusts to settle the respective obligations of asset-backed notes issued by those trusts. The outstanding balances of those asset-backed notes issued to third party investors were included in Long-term borrowings and were $2.1 billion at June 30, 2025 and $1.2 billion at December 31, 2024.