Quarterly report pursuant to Section 13 or 15(d)

Business Segment Information - Noninterest Income by Business Segment and All Other (Details)

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Business Segment Information - Noninterest Income by Business Segment and All Other (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Segment Reporting Information [Line Items]    
Total fees and commissions $ 8,660 $ 7,894
Market making and similar activities 3,888 4,712
Other income (loss) (762) (796)
Total noninterest income 11,786 11,810
Card income    
Segment Reporting Information [Line Items]    
Card income and service charges 1,463 1,469
Interchange fees    
Segment Reporting Information [Line Items]    
Card income and service charges 931 956
Other card income    
Segment Reporting Information [Line Items]    
Card income and service charges 532 513
Service charges    
Segment Reporting Information [Line Items]    
Card income and service charges 1,442 1,410
Deposit-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 1,122 1,097
Lending-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 320 313
Investment and brokerage services    
Segment Reporting Information [Line Items]    
Investment and brokerage services 4,187 3,852
Asset management fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 3,270 2,918
Brokerage fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 917 934
Total investment banking fees    
Segment Reporting Information [Line Items]    
Investment banking fees 1,568 1,163
Underwriting income    
Segment Reporting Information [Line Items]    
Investment banking fees 901 569
Syndication fees    
Segment Reporting Information [Line Items]    
Investment banking fees 294 231
Financial advisory services    
Segment Reporting Information [Line Items]    
Investment banking fees 373 363
Operating Segments | Consumer Banking    
Segment Reporting Information [Line Items]    
Total fees and commissions 1,928 1,947
Market making and similar activities 5 5
Other income (loss) 36 161
Total noninterest income 1,969 2,113
Operating Segments | Consumer Banking | Card income    
Segment Reporting Information [Line Items]    
Card income and service charges 1,272 1,274
Operating Segments | Consumer Banking | Interchange fees    
Segment Reporting Information [Line Items]    
Card income and service charges 732 753
Operating Segments | Consumer Banking | Other card income    
Segment Reporting Information [Line Items]    
Card income and service charges 540 521
Operating Segments | Consumer Banking | Service charges    
Segment Reporting Information [Line Items]    
Card income and service charges 578 599
Operating Segments | Consumer Banking | Deposit-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 578 599
Operating Segments | Consumer Banking | Lending-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 0 0
Operating Segments | Consumer Banking | Investment and brokerage services    
Segment Reporting Information [Line Items]    
Investment and brokerage services 78 74
Operating Segments | Consumer Banking | Asset management fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 55 47
Operating Segments | Consumer Banking | Brokerage fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 23 27
Operating Segments | Consumer Banking | Total investment banking fees    
Segment Reporting Information [Line Items]    
Investment banking fees 0 0
Operating Segments | Consumer Banking | Underwriting income    
Segment Reporting Information [Line Items]    
Investment banking fees 0 0
Operating Segments | Consumer Banking | Syndication fees    
Segment Reporting Information [Line Items]    
Investment banking fees 0 0
Operating Segments | Consumer Banking | Financial advisory services    
Segment Reporting Information [Line Items]    
Investment banking fees 0 0
Operating Segments | Global Wealth & Investment Management    
Segment Reporting Information [Line Items]    
Total fees and commissions 3,696 3,308
Market making and similar activities 34 34
Other income (loss) 47 97
Total noninterest income 3,777 3,439
Operating Segments | Global Wealth & Investment Management | Card income    
Segment Reporting Information [Line Items]    
Card income and service charges 10 12
Operating Segments | Global Wealth & Investment Management | Interchange fees    
Segment Reporting Information [Line Items]    
Card income and service charges (4) 0
Operating Segments | Global Wealth & Investment Management | Other card income    
Segment Reporting Information [Line Items]    
Card income and service charges 14 12
Operating Segments | Global Wealth & Investment Management | Service charges    
Segment Reporting Information [Line Items]    
Card income and service charges 23 19
Operating Segments | Global Wealth & Investment Management | Deposit-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 11 11
Operating Segments | Global Wealth & Investment Management | Lending-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 12 8
Operating Segments | Global Wealth & Investment Management | Investment and brokerage services    
Segment Reporting Information [Line Items]    
Investment and brokerage services 3,600 3,238
Operating Segments | Global Wealth & Investment Management | Asset management fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 3,219 2,873
Operating Segments | Global Wealth & Investment Management | Brokerage fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 381 365
Operating Segments | Global Wealth & Investment Management | Total investment banking fees    
Segment Reporting Information [Line Items]    
Investment banking fees 63 39
Operating Segments | Global Wealth & Investment Management | Underwriting income    
Segment Reporting Information [Line Items]    
Investment banking fees 63 39
Operating Segments | Global Wealth & Investment Management | Syndication fees    
Segment Reporting Information [Line Items]    
Investment banking fees 0 0
Operating Segments | Global Wealth & Investment Management | Financial advisory services    
Segment Reporting Information [Line Items]    
Investment banking fees 0 0
Operating Segments | Global Banking    
Segment Reporting Information [Line Items]    
Total fees and commissions 1,806 1,581
Market making and similar activities 68 45
Other income (loss) 646 670
Total noninterest income 2,520 2,296
Operating Segments | Global Banking | Card income    
Segment Reporting Information [Line Items]    
Card income and service charges 188 190
Operating Segments | Global Banking | Interchange fees    
Segment Reporting Information [Line Items]    
Card income and service charges 186 187
Operating Segments | Global Banking | Other card income    
Segment Reporting Information [Line Items]    
Card income and service charges 2 3
Operating Segments | Global Banking | Service charges    
Segment Reporting Information [Line Items]    
Card income and service charges 750 714
Operating Segments | Global Banking | Deposit-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 509 467
Operating Segments | Global Banking | Lending-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 241 247
Operating Segments | Global Banking | Investment and brokerage services    
Segment Reporting Information [Line Items]    
Investment and brokerage services 18 9
Operating Segments | Global Banking | Asset management fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 0 0
Operating Segments | Global Banking | Brokerage fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 18 9
Operating Segments | Global Banking | Total investment banking fees    
Segment Reporting Information [Line Items]    
Investment banking fees 850 668
Operating Segments | Global Banking | Underwriting income    
Segment Reporting Information [Line Items]    
Investment banking fees 381 229
Operating Segments | Global Banking | Syndication fees    
Segment Reporting Information [Line Items]    
Investment banking fees 152 126
Operating Segments | Global Banking | Financial advisory services    
Segment Reporting Information [Line Items]    
Investment banking fees 317 313
Operating Segments | Global Markets    
Segment Reporting Information [Line Items]    
Total fees and commissions 1,310 1,096
Market making and similar activities 3,830 4,398
Other income (loss) 62 23
Total noninterest income 5,202 5,517
Operating Segments | Global Markets | Card income    
Segment Reporting Information [Line Items]    
Card income and service charges 17 16
Operating Segments | Global Markets | Interchange fees    
Segment Reporting Information [Line Items]    
Card income and service charges 17 16
Operating Segments | Global Markets | Other card income    
Segment Reporting Information [Line Items]    
Card income and service charges 0 0
Operating Segments | Global Markets | Service charges    
Segment Reporting Information [Line Items]    
Card income and service charges 90 78
Operating Segments | Global Markets | Deposit-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 23 20
Operating Segments | Global Markets | Lending-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 67 58
Operating Segments | Global Markets | Investment and brokerage services    
Segment Reporting Information [Line Items]    
Investment and brokerage services 495 533
Operating Segments | Global Markets | Asset management fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 0 0
Operating Segments | Global Markets | Brokerage fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 495 533
Operating Segments | Global Markets | Total investment banking fees    
Segment Reporting Information [Line Items]    
Investment banking fees 708 469
Operating Segments | Global Markets | Underwriting income    
Segment Reporting Information [Line Items]    
Investment banking fees 510 314
Operating Segments | Global Markets | Syndication fees    
Segment Reporting Information [Line Items]    
Investment banking fees 142 105
Operating Segments | Global Markets | Financial advisory services    
Segment Reporting Information [Line Items]    
Investment banking fees 56 50
All Other    
Segment Reporting Information [Line Items]    
Total fees and commissions (80) (38)
Market making and similar activities (49) 230
Other income (loss) (1,553) (1,747)
Total noninterest income (1,682) (1,555)
All Other | Card income    
Segment Reporting Information [Line Items]    
Card income and service charges (24) (23)
All Other | Interchange fees    
Segment Reporting Information [Line Items]    
Card income and service charges 0 0
All Other | Other card income    
Segment Reporting Information [Line Items]    
Card income and service charges (24) (23)
All Other | Service charges    
Segment Reporting Information [Line Items]    
Card income and service charges 1 0
All Other | Deposit-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 1 0
All Other | Lending-related fees    
Segment Reporting Information [Line Items]    
Card income and service charges 0 0
All Other | Investment and brokerage services    
Segment Reporting Information [Line Items]    
Investment and brokerage services (4) (2)
All Other | Asset management fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services (4) (2)
All Other | Brokerage fees    
Segment Reporting Information [Line Items]    
Investment and brokerage services 0 0
All Other | Total investment banking fees    
Segment Reporting Information [Line Items]    
Investment banking fees (53) (13)
All Other | Underwriting income    
Segment Reporting Information [Line Items]    
Investment banking fees (53) (13)
All Other | Syndication fees    
Segment Reporting Information [Line Items]    
Investment banking fees 0 0
All Other | Financial advisory services    
Segment Reporting Information [Line Items]    
Investment banking fees $ 0 $ 0