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Loans and Leases - Balances Of Commercial Loan Portfolio Classes, Disaggregated By PD Grade (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases | $ 56,687 | $ 58,232
Commercial and industrial | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 4,265 | 9,331
Financing receivable, originated year two | 6,336 | 5,308
Financing receivable, originated year three | 4,296 | 2,812
Financing receivable, originated year four | 2,151 | 1,829
Financing receivable, originated year five | 1,496 | 1,240
Financing receivable, originated prior to year five | 2,944 | 2,267
LMC, Non-Revolving Loans | 4,876 | 5,404
Revolving loans | 6,099 | 4,793
Revolving Loans converted to term loans | 65 | 120
Loans and leases | 32,528 | 33,104
Revolving loans converted to term loan during period | 0 | 50
Commercial and industrial | PD Grade 1 -12 | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 4,191 | 9,060
Financing receivable, originated year two | 6,164 | 5,138
Financing receivable, originated year three | 4,163 | 2,628
Financing receivable, originated year four | 1,958 | 1,748
Financing receivable, originated year five | 1,448 | 1,161
Financing receivable, originated prior to year five | 2,758 | 2,145
LMC, Non-Revolving Loans | 4,876 | 5,404
Revolving loans | 5,827 | 4,571
Revolving Loans converted to term loans | 13 | 60
Loans and leases | 31,398 | 31,915
Commercial and industrial | PD Grade 13 | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 22 | 89
Financing receivable, originated year two | 50 | 93
Financing receivable, originated year three | 56 | 70
Financing receivable, originated year four | 75 | 31
Financing receivable, originated year five | 24 | 37
Financing receivable, originated prior to year five | 75 | 64
LMC, Non-Revolving Loans | 0 | 0
Revolving loans | 155 | 127
Revolving Loans converted to term loans | 5 | 1
Loans and leases | 462 | 512
Commercial and industrial | PD Grade 14 15 16 | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 52 | 182
Financing receivable, originated year two | 122 | 77
Financing receivable, originated year three | 77 | 114
Financing receivable, originated year four | 118 | 50
Financing receivable, originated year five | 24 | 42
Financing receivable, originated prior to year five | 111 | 58
LMC, Non-Revolving Loans | 0 | 0
Revolving loans | 117 | 95
Revolving Loans converted to term loans | 47 | 59
Loans and leases | 668 | 677
Commercial real estate | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases | 12,292 | 12,275
Commercial real estate | CRE | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 1,245 | 2,555
Financing receivable, originated year two | 2,387 | 3,348
Financing receivable, originated year three | 3,309 | 1,888
Financing receivable, originated year four | 1,614 | 1,257
Financing receivable, originated year five | 983 | 1,044
Financing receivable, originated prior to year five | 2,429 | 1,887
Revolving loans | 325 | 277
Revolving Loans converted to term loans | 0 | 19
Loans and leases | 12,292 | 12,275
Commercial real estate | PD Grade 1 -12 | CRE | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 1,238 | 2,477
Financing receivable, originated year two | 2,295 | 3,311
Financing receivable, originated year three | 3,248 | 1,750
Financing receivable, originated year four | 1,399 | 1,140
Financing receivable, originated year five | 873 | 946
Financing receivable, originated prior to year five | 2,273 | 1,800
Revolving loans | 299 | 259
Revolving Loans converted to term loans | 0 | 19
Loans and leases | 11,625 | 11,702
Commercial real estate | PD Grade 13 | CRE | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 3 | 48
Financing receivable, originated year two | 74 | 24
Financing receivable, originated year three | 50 | 117
Financing receivable, originated year four | 190 | 75
Financing receivable, originated year five | 70 | 71
Financing receivable, originated prior to year five | 101 | 54
Revolving loans | 0 | 0
Revolving Loans converted to term loans | 0 | 0
Loans and leases | 488 | 389
Commercial real estate | PD Grade 14 15 16 | CRE | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, originated year one | 4 | 30
Financing receivable, originated year two | 18 | 13
Financing receivable, originated year three | 11 | 21
Financing receivable, originated year four | 25 | 42
Financing receivable, originated year five | 40 | 27
Financing receivable, originated prior to year five | 55 | 33
Revolving loans | 26 | 18
Revolving Loans converted to term loans | 0 | 0
Loans and leases | $ 179 | $ 184

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