Noninterest Revenue and Noninterest Expense - Other income (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jan. 31, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Schedule of Noninterest revenue [Line Items] | |||||
| Operating lease income | $ 1,207 | $ 901 | $ 2,360 | $ 1,730 | |
| Initial gain on the Visa share exchange | 4,509 | 0 | 4,509 | 0 | |
| Gains on certain equity investments | 1,026 | 0 | 1,026 | 0 | |
| First Republic-related gain | $ 588 | 0 | $ 40 | 0 | $ 628 |
| Payment related to business acquisition | $ 609 | ||||
| Corporate | |||||
| Schedule of Noninterest revenue [Line Items] | |||||
| Gains on certain equity investments | 763 | 763 | |||
| Operating Segments | CIB | |||||
| Schedule of Noninterest revenue [Line Items] | |||||
| Gains on certain equity investments | $ 263 | $ 263 | |||