Premises and Equipment (Narrative) (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Property, Plant and Equipment [Line Items] | |||
| Depreciation | $ 57,400 | $ 55,100 | $ 49,900 |
| Operating Lease, Rent Expense | 47,700 | 45,600 | 46,000 |
| Operating Lease, Right-of-Use Asset | 288,816 | 281,438 | |
| Operating lease, payments | 32,900 | 32,100 | |
| Premises and Equipment | |||
| Property, Plant and Equipment [Line Items] | |||
| Operating Lease, Right-of-Use Asset | 288,800 | 281,400 | |
| Other Liabilities [Member] | |||
| Property, Plant and Equipment [Line Items] | |||
| Operating lease, liability | 321,945 | 313,400 | |
| Partnership Interest [Member] | |||
| Property, Plant and Equipment [Line Items] | |||
| Operating Lease, Rent Expense | $ 327 | $ 322 | $ 9,800 |