Annual report pursuant to Section 13 and 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
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases $ 1,053,732 $ 1,045,747  
Total gross charge-offs 4,817 3,439 $ 3,797
Estimate of Fair Value Measurement      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 3,569 5,771  
Small Business Card Loans | United States      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total gross charge-offs 317 172  
Commercial      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 593,767 589,362  
Total gross charge-offs 844 478 $ 719
Commercial | Estimate of Fair Value Measurement      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 3,326 5,432  
Commercial | United States      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 358,931 358,481  
Originated in current fiscal year 42,120 61,478  
Originated in fiscal year before current fiscal year 44,606 40,511  
Originated two years before current fiscal year 28,446 19,306  
Originated three years before current fiscal year 13,858 17,450  
Originated four years before current fiscal year 12,309 9,951  
Prior 31,265 31,138  
Revolving Loans 186,327 178,647  
Total gross charge-offs 191 151  
Gross charge-offs, Originated in current fiscal year 5 2  
Gross charge-offs, Originated in fiscal year before current fiscal year 38 24  
Gross charge-offs, Originated two years before current fiscal year 29 24  
Gross charge-offs, Originated three years before current fiscal year 4 9  
Gross charge-offs, Originated four years before current fiscal year 2 6  
Gross charge-offs, Prior 27 13  
Gross charge-offs, Revolving Loans 86 73  
Commercial | United States | Pass rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 347,563 348,447  
Originated in current fiscal year 41,842 61,200  
Originated in fiscal year before current fiscal year 43,290 39,717  
Originated two years before current fiscal year 27,738 18,609  
Originated three years before current fiscal year 13,495 16,566  
Originated four years before current fiscal year 11,772 8,749  
Prior 29,923 30,282  
Revolving Loans 179,503 173,324  
Commercial | United States | Reservable criticized      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 11,368 10,034  
Originated in current fiscal year 278 278  
Originated in fiscal year before current fiscal year 1,316 794  
Originated two years before current fiscal year 708 697  
Originated three years before current fiscal year 363 884  
Originated four years before current fiscal year 537 1,202  
Prior 1,342 856  
Revolving Loans 6,824 5,323  
Commercial | Non United States      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 124,581 124,479  
Originated in current fiscal year 17,103 24,884  
Originated in fiscal year before current fiscal year 15,994 19,493  
Originated two years before current fiscal year 15,550 5,514  
Originated three years before current fiscal year 2,495 4,207  
Originated four years before current fiscal year 3,108 2,521  
Prior 5,559 5,172  
Revolving Loans 64,772 62,688  
Total gross charge-offs 37 41  
Gross charge-offs, Originated in current fiscal year 0 0  
Gross charge-offs, Originated in fiscal year before current fiscal year 0 3  
Gross charge-offs, Originated two years before current fiscal year 8 1  
Gross charge-offs, Originated three years before current fiscal year 7 0  
Gross charge-offs, Originated four years before current fiscal year 1 37  
Gross charge-offs, Prior 0 0  
Gross charge-offs, Revolving Loans 21 0  
Commercial | Non United States | Pass rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 122,931 121,890  
Originated in current fiscal year 17,053 24,839  
Originated in fiscal year before current fiscal year 15,810 19,098  
Originated two years before current fiscal year 15,256 5,183  
Originated three years before current fiscal year 2,405 3,882  
Originated four years before current fiscal year 2,950 2,423  
Prior 5,485 4,697  
Revolving Loans 63,972 61,768  
Commercial | Non United States | Reservable criticized      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 1,650 2,589  
Originated in current fiscal year 50 45  
Originated in fiscal year before current fiscal year 184 395  
Originated two years before current fiscal year 294 331  
Originated three years before current fiscal year 90 325  
Originated four years before current fiscal year 158 98  
Prior 74 475  
Revolving Loans 800 920  
Commercial | Commercial real estate      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 72,878 69,766  
Originated in current fiscal year 5,011 15,301  
Originated in fiscal year before current fiscal year 16,896 13,926  
Originated two years before current fiscal year 13,538 6,301  
Originated three years before current fiscal year 4,808 10,514  
Originated four years before current fiscal year 9,418 5,535  
Prior 12,921 9,623  
Revolving Loans 10,286 8,566  
Total gross charge-offs 254 75  
Gross charge-offs, Originated in current fiscal year 2 0  
Gross charge-offs, Originated in fiscal year before current fiscal year 0 0  
Gross charge-offs, Originated two years before current fiscal year 4 6  
Gross charge-offs, Originated three years before current fiscal year 0 0  
Gross charge-offs, Originated four years before current fiscal year 59 26  
Gross charge-offs, Prior 189 43  
Gross charge-offs, Revolving Loans 0 0  
Commercial | Commercial real estate | Pass rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 64,150 64,619  
Originated in current fiscal year 4,877 15,290  
Originated in fiscal year before current fiscal year 16,147 13,089  
Originated two years before current fiscal year 11,810 5,756  
Originated three years before current fiscal year 4,026 9,013  
Originated four years before current fiscal year 7,286 4,384  
Prior 10,127 8,606  
Revolving Loans 9,877 8,481  
Commercial | Commercial real estate | Reservable criticized      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 8,728 5,147  
Originated in current fiscal year 134 11  
Originated in fiscal year before current fiscal year 749 837  
Originated two years before current fiscal year 1,728 545  
Originated three years before current fiscal year 782 1,501  
Originated four years before current fiscal year 2,132 1,151  
Prior 2,794 1,017  
Revolving Loans 409 85  
Commercial | Commercial real estate | United States      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 66,800 64,900  
Commercial | Commercial real estate | Non United States      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 6,100 4,800  
Commercial | Commercial Lease Financing      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 14,854 13,644  
Originated in current fiscal year 4,197 3,264  
Originated in fiscal year before current fiscal year 3,099 2,792  
Originated two years before current fiscal year 2,419 1,967  
Originated three years before current fiscal year 1,365 1,649  
Originated four years before current fiscal year 1,206 1,351  
Prior 2,568 2,621  
Revolving Loans 0 0  
Total gross charge-offs 2 8  
Gross charge-offs, Originated in current fiscal year 0 0  
Gross charge-offs, Originated in fiscal year before current fiscal year 0 4  
Gross charge-offs, Originated two years before current fiscal year 1 0  
Gross charge-offs, Originated three years before current fiscal year 1 4  
Gross charge-offs, Originated four years before current fiscal year 0 0  
Gross charge-offs, Prior 0 0  
Gross charge-offs, Revolving Loans 0 0  
Commercial | Commercial Lease Financing | Pass rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 14,688 13,404  
Originated in current fiscal year 4,188 3,255  
Originated in fiscal year before current fiscal year 3,077 2,757  
Originated two years before current fiscal year 2,373 1,955  
Originated three years before current fiscal year 1,349 1,578  
Originated four years before current fiscal year 1,174 1,301  
Prior 2,527 2,558  
Revolving Loans 0 0  
Commercial | Commercial Lease Financing | Reservable criticized      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 166 240  
Originated in current fiscal year 9 9  
Originated in fiscal year before current fiscal year 22 35  
Originated two years before current fiscal year 46 12  
Originated three years before current fiscal year 16 71  
Originated four years before current fiscal year 32 50  
Prior 41 63  
Revolving Loans 0 0  
Commercial | U.S. small business commercial | United States      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 9,415 9,055  
Originated in current fiscal year 1,892 1,836  
Originated in fiscal year before current fiscal year 1,894 1,988  
Originated two years before current fiscal year 1,645 1,456  
Originated three years before current fiscal year 876 940  
Originated four years before current fiscal year 784 675  
Prior 1,893 2,030  
Revolving Loans 431 130  
Total gross charge-offs 43 31  
Gross charge-offs, Originated in current fiscal year 1 0  
Gross charge-offs, Originated in fiscal year before current fiscal year 2 1  
Gross charge-offs, Originated two years before current fiscal year 2 11  
Gross charge-offs, Originated three years before current fiscal year 19 4  
Gross charge-offs, Originated four years before current fiscal year 3 1  
Gross charge-offs, Prior 4 6  
Gross charge-offs, Revolving Loans 12 8  
Commercial | U.S. small business commercial | United States | Pass rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 9,031 8,726  
Originated in current fiscal year 1,886 1,825  
Originated in fiscal year before current fiscal year 1,830 1,953  
Originated two years before current fiscal year 1,550 1,408  
Originated three years before current fiscal year 836 864  
Originated four years before current fiscal year 721 624  
Prior 1,780 1,925  
Revolving Loans 428 127  
Commercial | U.S. small business commercial | United States | Reservable criticized      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 384 329  
Originated in current fiscal year 6 11  
Originated in fiscal year before current fiscal year 64 35  
Originated two years before current fiscal year 95 48  
Originated three years before current fiscal year 40 76  
Originated four years before current fiscal year 63 51  
Prior 113 105  
Revolving Loans 3 3  
Commercial | Term Loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 580,659 575,425  
Originated in current fiscal year 70,323 106,763  
Originated in fiscal year before current fiscal year 82,489 78,710  
Originated two years before current fiscal year 61,598 34,544  
Originated three years before current fiscal year 23,402 34,760  
Originated four years before current fiscal year 26,825 20,033  
Prior 54,206 50,584  
Revolving Loans 261,816 250,031  
Total gross charge-offs 527 306  
Gross charge-offs, Originated in current fiscal year 8 2  
Gross charge-offs, Originated in fiscal year before current fiscal year 40 32  
Gross charge-offs, Originated two years before current fiscal year 44 42  
Gross charge-offs, Originated three years before current fiscal year 31 17  
Gross charge-offs, Originated four years before current fiscal year 65 70  
Gross charge-offs, Prior 220 62  
Gross charge-offs, Revolving Loans 119 81  
Commercial | Small Business Card Loans | Less than 620      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 530 297  
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 1,100 859  
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 2,700 2,400  
Commercial | Small Business Card Loans | Greater than or equal to 740      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases 5,500 5,000  
Commercial | Small Business Card Loans | United States      
Financing Receivable, Credit Quality Indicator [Line Items]      
Loans and leases $ 9,800 $ 8,500