Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases and Allowance for Credit Losses - Commercial - Credit Quality Indicators (Details)

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Outstanding Loans and Leases and Allowance for Credit Losses - Commercial - Credit Quality Indicators (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases $ 993,145 $ 979,124
Estimate of Fair Value Measurement    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 7,111 7,819
Commercial    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 554,296 543,420
Commercial | Estimate of Fair Value Measurement    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 6,543 7,201
Commercial | United States    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 330,973 325,936
Originated in current fiscal year 12,026 56,460
Originated in fiscal year before current fiscal year 53,201 25,699
Originated two years before current fiscal year 23,929 24,681
Originated three years before current fiscal year 22,596 13,054
Originated four years before current fiscal year 12,199 10,940
Prior 35,334 24,949
Revolving Loans 171,688 170,153
Commercial | United States | Pass rated    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 321,428 315,618
Originated in current fiscal year 12,007 55,862
Originated in fiscal year before current fiscal year 52,543 25,012
Originated two years before current fiscal year 23,219 23,373
Originated three years before current fiscal year 21,446 11,439
Originated four years before current fiscal year 10,728 10,426
Prior 34,128 23,877
Revolving Loans 167,357 165,629
Commercial | United States | Reservable criticized    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 9,545 10,318
Originated in current fiscal year 19 598
Originated in fiscal year before current fiscal year 658 687
Originated two years before current fiscal year 710 1,308
Originated three years before current fiscal year 1,150 1,615
Originated four years before current fiscal year 1,471 514
Prior 1,206 1,072
Revolving Loans 4,331 4,524
Commercial | Non United States    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 122,267 113,266
Originated in current fiscal year 5,983 25,972
Originated in fiscal year before current fiscal year 25,151 9,027
Originated two years before current fiscal year 8,262 7,620
Originated three years before current fiscal year 6,516 4,796
Originated four years before current fiscal year 4,001 3,273
Prior 6,146 3,278
Revolving Loans 66,208 59,300
Commercial | Non United States | Pass rated    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 119,178 110,787
Originated in current fiscal year 5,923 25,749
Originated in fiscal year before current fiscal year 24,744 8,703
Originated two years before current fiscal year 7,734 7,133
Originated three years before current fiscal year 6,085 4,521
Originated four years before current fiscal year 3,821 3,016
Prior 5,428 3,062
Revolving Loans 65,443 58,603
Commercial | Non United States | Reservable criticized    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 3,089 2,479
Originated in current fiscal year 60 223
Originated in fiscal year before current fiscal year 407 324
Originated two years before current fiscal year 528 487
Originated three years before current fiscal year 431 275
Originated four years before current fiscal year 180 257
Prior 718 216
Revolving Loans 765 697
Commercial | Commercial real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 62,533 63,009
Originated in current fiscal year 3,362 14,679
Originated in fiscal year before current fiscal year 14,046 8,234
Originated two years before current fiscal year 7,502 13,474
Originated three years before current fiscal year 12,034 7,420
Originated four years before current fiscal year 6,921 3,922
Prior 10,806 8,295
Revolving Loans 7,862 6,985
Commercial | Commercial real estate | Pass rated    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 56,247 55,511
Originated in current fiscal year 3,355 14,402
Originated in fiscal year before current fiscal year 13,667 7,244
Originated two years before current fiscal year 6,787 11,237
Originated three years before current fiscal year 10,000 5,710
Originated four years before current fiscal year 5,456 3,326
Prior 9,285 6,831
Revolving Loans 7,697 6,761
Commercial | Commercial real estate | Reservable criticized    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 6,286 7,498
Originated in current fiscal year 7 277
Originated in fiscal year before current fiscal year 379 990
Originated two years before current fiscal year 715 2,237
Originated three years before current fiscal year 2,034 1,710
Originated four years before current fiscal year 1,465 596
Prior 1,521 1,464
Revolving Loans 165 224
Commercial | Commercial real estate | United States    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 58,300 58,200
Commercial | Commercial real estate | Non United States    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 4,300 4,800
Commercial | Commercial Lease Financing    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 14,008 14,825
Originated in current fiscal year 464 3,305
Originated in fiscal year before current fiscal year 3,044 2,503
Originated two years before current fiscal year 2,262 2,518
Originated three years before current fiscal year 2,324 2,097
Originated four years before current fiscal year 1,874 1,789
Prior 4,040 2,613
Revolving Loans 0 0
Commercial | Commercial Lease Financing | Pass rated    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 13,643 14,438
Originated in current fiscal year 464 3,280
Originated in fiscal year before current fiscal year 3,016 2,485
Originated two years before current fiscal year 2,232 2,427
Originated three years before current fiscal year 2,220 2,030
Originated four years before current fiscal year 1,815 1,741
Prior 3,896 2,475
Revolving Loans 0 0
Commercial | Commercial Lease Financing | Reservable criticized    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 365 387
Originated in current fiscal year 0 25
Originated in fiscal year before current fiscal year 28 18
Originated two years before current fiscal year 30 91
Originated three years before current fiscal year 104 67
Originated four years before current fiscal year 59 48
Prior 144 138
Revolving Loans 0 0
Commercial | U.S. small business commercial | United States    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 10,396 12,051
Originated in current fiscal year 383 4,269
Originated in fiscal year before current fiscal year 3,105 2,951
Originated two years before current fiscal year 2,383 1,150
Originated three years before current fiscal year 1,088 850
Originated four years before current fiscal year 809 687
Prior 2,487 2,000
Revolving Loans 141 144
Commercial | U.S. small business commercial | United States | Pass rated    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 10,008 11,618
Originated in current fiscal year 383 4,257
Originated in fiscal year before current fiscal year 3,089 2,922
Originated two years before current fiscal year 2,353 1,059
Originated three years before current fiscal year 994 763
Originated four years before current fiscal year 734 623
Prior 2,316 1,853
Revolving Loans 139 141
Commercial | U.S. small business commercial | United States | Reservable criticized    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 388 433
Originated in current fiscal year 0 12
Originated in fiscal year before current fiscal year 16 29
Originated two years before current fiscal year 30 91
Originated three years before current fiscal year 94 87
Originated four years before current fiscal year 75 64
Prior 171 147
Revolving Loans 2 3
Commercial | Term Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 540,177 529,087
Originated in current fiscal year 22,218 104,685
Originated in fiscal year before current fiscal year 98,547 48,414
Originated two years before current fiscal year 44,338 49,443
Originated three years before current fiscal year 44,558 28,217
Originated four years before current fiscal year 25,804 20,611
Prior 58,813 41,135
Revolving Loans 245,899 236,582
Commercial | Small Business Card Loans | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 198 192
Commercial | Small Business Card Loans | Greater than or equal to 620 and less than 680    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 658 618
Commercial | Small Business Card Loans | Greater than or equal to 680 and less than 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 2,000 1,900
Commercial | Small Business Card Loans | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 4,700 4,400
Commercial | Small Business Card Loans | United States    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases $ 7,600 $ 7,100