Loans - Schedule of Forecasted Economic Scenarios (Detail) |
Dec. 31, 2028 |
Dec. 31, 2027 |
Jun. 30, 2027 |
Mar. 31, 2027 |
Dec. 31, 2026 |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|---|---|---|---|---|
| Wholesale | |||||||
| Schedule Of Forecasted Economic Scenarios [Line Items] | |||||||
| Threshold period past due | 180 days | ||||||
| Forecast | United States | |||||||
| Schedule Of Forecasted Economic Scenarios [Line Items] | |||||||
| Maximum estimated unemployment rate | 7.40% | ||||||
| Maximum decline in gross domestic rate relative to expected rate | 3.00% | ||||||
| Maximum estimated unemployment rate, multi-scenario forecast | 5.40% | ||||||
| Maximum decline in gross domestic rate relative to expected rate, multi-scenario forecast | 1.70% | ||||||
| Forecast | United States | U.S. unemployment rate | |||||||
| Schedule Of Forecasted Economic Scenarios [Line Items] | |||||||
| Allowance for credit losses forecast model inputs | 4.40% | 4.40% | 4.70% | ||||
| Forecast | United States | U.S. GDP rate | |||||||
| Schedule Of Forecasted Economic Scenarios [Line Items] | |||||||
| Allowance for credit losses forecast model inputs | 1.90% | 1.80% | 1.90% |