Loans - Schedule of Forecasted Economic Scenarios (Detail) - Scenario, Forecast [Member] - UNITED STATES |
Jun. 30, 2022 |
Dec. 31, 2021 |
Jun. 30, 2021 |
|---|---|---|---|
| Unemployment Rate [Member] | Maximum [Member] | |||
| Schedule Of Forecasted Economic Scenarios [Line Items] | |||
| Allowance for credit losses | 6.90% | 8.30% | 12.00% |
| Unemployment Rate [Member] | Minimum [Member] | |||
| Schedule Of Forecasted Economic Scenarios [Line Items] | |||
| Allowance for credit losses | 4.90% | 5.30% | 6.00% |
| GDP [Member] | Maximum [Member] | |||
| Schedule Of Forecasted Economic Scenarios [Line Items] | |||
| Allowance for credit losses | (1.80%) | (4.10%) | (8.10%) |
| GDP [Member] | Minimum [Member] | |||
| Schedule Of Forecasted Economic Scenarios [Line Items] | |||
| Allowance for credit losses | 4.40% | 2.70% | (0.20%) |