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Loans - Commercial Banking: Risk Profile by Internal Risk Rating (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total | $ 261,390 | $ 251,624
Commercial Banking |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term loans by vintage year one | 12,136 | 14,262
Term loans by vintage year two | 11,341 | 14,181
Term loans by vintage year three | 11,562 | 8,366
Term loans by vintage year four | 6,467 | 4,818
Term loans by vintage year five | 3,276 | 3,990
Term loans by vintage after year five | 9,878 | 9,561
Total term loans | 54,660 | 55,178
Revolving loans | 24,493 | 20,455
Revolving loans converted to term | 95 | 147
Total | 79,248 | 75,780
PPP loans | 182 | 238
Commercial Banking | Commercial and multifamily real estate |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term loans by vintage year one | 3,879 | 4,111
Term loans by vintage year two | 3,596 | 5,389
Term loans by vintage year three | 4,398 | 3,777
Term loans by vintage year four | 2,946 | 1,798
Term loans by vintage year five | 1,171 | 2,043
Term loans by vintage after year five | 6,030 | 6,312
Total term loans | 22,020 | 23,430
Revolving loans | 11,051 | 7,226
Revolving loans converted to term | 25 | 25
Total | 33,096 | 30,681
Commercial Banking | Commercial and multifamily real estate | Noncriticized |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term loans by vintage year one | 3,663 | 3,791
Term loans by vintage year two | 3,320 | 4,932
Term loans by vintage year three | 3,984 | 3,232
Term loans by vintage year four | 2,583 | 1,437
Term loans by vintage year five | 924 | 1,649
Term loans by vintage after year five | 4,455 | 4,904
Total term loans | 18,929 | 19,945
Revolving loans | 10,950 | 7,114
Revolving loans converted to term | 0 | 0
Total | 29,879 | 27,059
Commercial Banking | Commercial and multifamily real estate | Criticized | Criticized performing |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term loans by vintage year one | 216 | 320
Term loans by vintage year two | 276 | 446
Term loans by vintage year three | 406 | 515
Term loans by vintage year four | 334 | 355
Term loans by vintage year five | 237 | 391
Term loans by vintage after year five | 1,335 | 1,258
Total term loans | 2,804 | 3,285
Revolving loans | 101 | 112
Revolving loans converted to term | 25 | 25
Total | 2,930 | 3,422
Commercial Banking | Commercial and multifamily real estate | Criticized | Criticized nonperforming |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term loans by vintage year one | 0 | 0
Term loans by vintage year two | 0 | 11
Term loans by vintage year three | 8 | 30
Term loans by vintage year four | 29 | 6
Term loans by vintage year five | 10 | 3
Term loans by vintage after year five | 240 | 150
Total term loans | 287 | 200
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 287 | 200
Commercial Banking | Commercial And Industrial [Member] |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term loans by vintage year one | 8,257 | 10,151
Term loans by vintage year two | 7,745 | 8,792
Term loans by vintage year three | 7,164 | 4,589
Term loans by vintage year four | 3,521 | 3,020
Term loans by vintage year five | 2,105 | 1,947
Term loans by vintage after year five | 3,848 | 3,249
Total term loans | 32,640 | 31,748
Revolving loans | 13,442 | 13,229
Revolving loans converted to term | 70 | 122
Total | 46,152 | 45,099
Commercial Banking | Commercial And Industrial [Member] | Noncriticized |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term loans by vintage year one | 8,064 | 9,761
Term loans by vintage year two | 7,519 | 7,890
Term loans by vintage year three | 6,200 | 4,043
Term loans by vintage year four | 3,219 | 2,717
Term loans by vintage year five | 1,913 | 1,832
Term loans by vintage after year five | 3,677 | 3,034
Total term loans | 30,592 | 29,277
Revolving loans | 12,677 | 11,548
Revolving loans converted to term | 70 | 80
Total | 43,339 | 40,905
Commercial Banking | Commercial And Industrial [Member] | Criticized | Criticized performing |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term loans by vintage year one | 150 | 316
Term loans by vintage year two | 169 | 794
Term loans by vintage year three | 881 | 521
Term loans by vintage year four | 260 | 252
Term loans by vintage year five | 184 | 106
Term loans by vintage after year five | 153 | 215
Total term loans | 1,797 | 2,204
Revolving loans | 702 | 1,498
Revolving loans converted to term | 0 | 42
Total | 2,499 | 3,744
Commercial Banking | Commercial And Industrial [Member] | Criticized | Criticized nonperforming |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Term loans by vintage year one | 43 | 74
Term loans by vintage year two | 57 | 108
Term loans by vintage year three | 83 | 25
Term loans by vintage year four | 42 | 51
Term loans by vintage year five | 8 | 9
Term loans by vintage after year five | 18 | 0
Total term loans | 251 | 267
Revolving loans | 63 | 183
Revolving loans converted to term | 0 | 0
Total | $ 314 | $ 450

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