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Loans and Leases - Balances of Commercial Loan Portfolio Classes, Disaggregated by PD Grade (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases | $ 63,058 | $ 62,565
Commercial: | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 2,776 | 5,780
Financing receivable, originated year two | 5,619 | 2,818
Financing receivable, originated year three | 2,385 | 3,840
Financing receivable, originated year four | 3,358 | 2,562
Financing receivable, originated year five | 2,083 | 1,121
Financing receivable, originated prior to year five | 4,540 | 4,079
LMC | 3,926 | 3,471
Revolving Loans | 9,481 | 9,446
Revolving Loans Converted to Term Loans | 233 | 311
Loans and leases | 34,401 | 33,428
Commercial: | Commercial and industrial | Pass (PD grades 1 through 12) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 2,749 | 5,590
Financing receivable, originated year two | 5,395 | 2,607
Financing receivable, originated year three | 2,218 | 3,649
Financing receivable, originated year four | 3,066 | 2,336
Financing receivable, originated year five | 1,892 | 1,055
Financing receivable, originated prior to year five | 4,240 | 3,853
LMC | 3,925 | 3,471
Revolving Loans | 9,023 | 8,784
Revolving Loans Converted to Term Loans | 199 | 248
Loans and leases | 32,707 | 31,593
Commercial: | Commercial and industrial | Special Mention (PD grade 13) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 4 | 106
Financing receivable, originated year two | 80 | 27
Financing receivable, originated year three | 7 | 78
Financing receivable, originated year four | 52 | 47
Financing receivable, originated year five | 30 | 33
Financing receivable, originated prior to year five | 59 | 57
LMC | 0 | 0
Revolving Loans | 120 | 279
Revolving Loans Converted to Term Loans | 6 | 2
Loans and leases | 358 | 629
Commercial: | Commercial and industrial | Substandard, Doubtful, or Loss (PD grades 14,15, and 16) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 23 | 84
Financing receivable, originated year two | 144 | 184
Financing receivable, originated year three | 160 | 113
Financing receivable, originated year four | 240 | 179
Financing receivable, originated year five | 161 | 33
Financing receivable, originated prior to year five | 241 | 169
LMC | 1 | 0
Revolving Loans | 338 | 383
Revolving Loans Converted to Term Loans | 28 | 61
Loans and leases | 1,336 | 1,206
Commercial: | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases | 13,675 | 14,421
Commercial: | Commercial real estate | Commercial Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 728 | 697
Financing receivable, originated year two | 969 | 1,369
Financing receivable, originated year three | 1,716 | 3,813
Financing receivable, originated year four | 3,248 | 3,254
Financing receivable, originated year five | 2,458 | 1,047
Financing receivable, originated prior to year five | 4,100 | 3,847
Revolving Loans | 369 | 346
Revolving Loans Converted to Term Loans | 87 | 48
Loans and leases | 13,675 | 14,421
Commercial: | Commercial real estate | Pass (PD grades 1 through 12) | Commercial Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 723 | 694
Financing receivable, originated year two | 954 | 1,296
Financing receivable, originated year three | 1,686 | 3,282
Financing receivable, originated year four | 2,583 | 2,778
Financing receivable, originated year five | 2,097 | 894
Financing receivable, originated prior to year five | 3,669 | 3,281
Revolving Loans | 286 | 340
Revolving Loans Converted to Term Loans | 87 | 47
Loans and leases | 12,085 | 12,612
Commercial: | Commercial real estate | Special Mention (PD grade 13) | Commercial Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 0 | 0
Financing receivable, originated year two | 11 | 42
Financing receivable, originated year three | 1 | 280
Financing receivable, originated year four | 252 | 198
Financing receivable, originated year five | 177 | 37
Financing receivable, originated prior to year five | 60 | 130
Revolving Loans | 34 | 0
Revolving Loans Converted to Term Loans | 0 | 1
Loans and leases | 535 | 688
Commercial: | Commercial real estate | Substandard, Doubtful, or Loss (PD grades 14,15, and 16) | Commercial Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 5 | 3
Financing receivable, originated year two | 4 | 31
Financing receivable, originated year three | 29 | 251
Financing receivable, originated year four | 413 | 278
Financing receivable, originated year five | 184 | 116
Financing receivable, originated prior to year five | 371 | 436
Revolving Loans | 49 | 6
Revolving Loans Converted to Term Loans | 0 | 0
Loans and leases | $ 1,055 | $ 1,121

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