Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases and Allowance for Credit Losses - Credit Card and Other Consumer - Credit Quality Indicators (Details)

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Outstanding Loans and Leases and Allowance for Credit Losses - Credit Card and Other Consumer - 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]      
Total $ 1,053,732 $ 1,045,747  
Total gross charge-offs 4,817 3,439 $ 3,797
Credit Card and Direct/ Indirect Consumer | Direct/indirect consumer      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total 103,468 106,236  
Revolving Loans 48,908 53,563  
Originated in current fiscal year 21,547 22,358  
Originated in fiscal year before current fiscal year 15,794 15,544  
Originated two years before current fiscal year 10,231 7,074  
Originated three years before current fiscal year 3,428 3,803  
Originated four years before current fiscal year 1,846 1,602  
Prior 1,714 2,292  
Revolving Loans 48,908 53,563  
Total gross charge-offs 233 232  
Gross charge-offs, Revolving Loans 5 7  
Gross charge-offs, Originated in current fiscal year 32 31  
Gross charge-offs, Originated in fiscal year before current fiscal year 95 79  
Gross charge-offs, Originated two years before current fiscal year 53 34  
Gross charge-offs, Originated three years before current fiscal year 15 27  
Gross charge-offs, Originated four years before current fiscal year 10 14  
Gross charge-offs, Prior 23 40  
Gross charge-offs, Revolving Loans 5 7  
Loans and lease receivable, securities based lending 48,800 53,400  
Credit Card and Direct/ Indirect Consumer | Direct/indirect consumer | Less than 620      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total 1,246 847  
Revolving Loans 11 12  
Originated in current fiscal year 292 237  
Originated in fiscal year before current fiscal year 428 301  
Originated two years before current fiscal year 336 113  
Originated three years before current fiscal year 85 84  
Originated four years before current fiscal year 55 43  
Prior 39 57  
Revolving Loans 11 12  
Credit Card and Direct/ Indirect Consumer | Direct/indirect consumer | Greater than or equal to 620 and less than 680      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total 2,506 2,521  
Revolving Loans 11 12  
Originated in current fiscal year 937 1,108  
Originated in fiscal year before current fiscal year 799 816  
Originated two years before current fiscal year 501 269  
Originated three years before current fiscal year 121 150  
Originated four years before current fiscal year 73 69  
Prior 64 97  
Revolving Loans 11 12  
Credit Card and Direct/ Indirect Consumer | Direct/indirect consumer | Greater than or equal to 680 and less than 740      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total 8,629 8,895  
Revolving Loans 48 52  
Originated in current fiscal year 3,451 4,091  
Originated in fiscal year before current fiscal year 2,582 2,730  
Originated two years before current fiscal year 1,641 992  
Originated three years before current fiscal year 462 520  
Originated four years before current fiscal year 244 214  
Prior 201 296  
Revolving Loans 48 52  
Credit Card and Direct/ Indirect Consumer | Direct/indirect consumer | Greater than or equal to 740      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total 41,656 39,679  
Revolving Loans 74 83  
Originated in current fiscal year 16,761 16,663  
Originated in fiscal year before current fiscal year 11,802 11,392  
Originated two years before current fiscal year 7,643 5,630  
Originated three years before current fiscal year 2,707 2,992  
Originated four years before current fiscal year 1,417 1,236  
Prior 1,252 1,683  
Revolving Loans 74 83  
Credit Card and Direct/ Indirect Consumer | Direct/indirect consumer | Other internal credit metrics      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total 49,431 54,294  
Revolving Loans 48,764 53,404  
Originated in current fiscal year 106 259  
Originated in fiscal year before current fiscal year 183 305  
Originated two years before current fiscal year 110 70  
Originated three years before current fiscal year 53 57  
Originated four years before current fiscal year 57 40  
Prior 158 159  
Revolving Loans 48,764 53,404  
Credit Card and Direct/ Indirect Consumer | Credit card      
Financing Receivable, Credit Quality Indicator [Line Items]      
Revolving Loans 101,323 92,830  
Total Credit Card as of December 31, 2023 102,200 93,421  
Revolving Loans 101,323 92,830  
Revolving Loans Converted to Term Loans 877 591  
Gross charge-offs, Revolving Loans 3,013 1,909  
Gross charge-offs, Total Revolving Loans And Revolving Loans Converted to Term Loans 3,133 1,985  
Gross charge-offs, Revolving Loans 3,013 1,909  
Gross charge-offs, Revolving Loans Converted to Term Loans 120 76  
Credit Card and Direct/ Indirect Consumer | Credit card | Less than 620      
Financing Receivable, Credit Quality Indicator [Line Items]      
Revolving Loans 5,030 3,866  
Total Credit Card as of December 31, 2023 5,338 4,056  
Revolving Loans 5,030 3,866  
Revolving Loans Converted to Term Loans 308 190  
Credit Card and Direct/ Indirect Consumer | Credit card | Greater than or equal to 620 and less than 680      
Financing Receivable, Credit Quality Indicator [Line Items]      
Revolving Loans 11,345 10,805  
Total Credit Card as of December 31, 2023 11,623 10,994  
Revolving Loans 11,345 10,805  
Revolving Loans Converted to Term Loans 278 189  
Credit Card and Direct/ Indirect Consumer | Credit card | Greater than or equal to 680 and less than 740      
Financing Receivable, Credit Quality Indicator [Line Items]      
Revolving Loans 34,538 32,017  
Total Credit Card as of December 31, 2023 34,777 32,186  
Revolving Loans 34,538 32,017  
Revolving Loans Converted to Term Loans 239 169  
Credit Card and Direct/ Indirect Consumer | Credit card | Greater than or equal to 740      
Financing Receivable, Credit Quality Indicator [Line Items]      
Revolving Loans 50,410 46,142  
Total Credit Card as of December 31, 2023 50,462 46,185  
Revolving Loans 50,410 46,142  
Revolving Loans Converted to Term Loans 52 43  
Credit Card and Direct/ Indirect Consumer | Credit card | Other internal credit metrics      
Financing Receivable, Credit Quality Indicator [Line Items]      
Revolving Loans 0 0  
Total Credit Card as of December 31, 2023 0 0  
Revolving Loans 0 0  
Revolving Loans Converted to Term Loans $ 0 $ 0