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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Off-Balance-Sheet, Credit Loss, Liability, Change in Method, Credit Loss Expense (Reversal) |  |  | $ (19,000) |  |
Lessee, Operating Lease, Liability, Payments, Due | $ 8,200 | $ 8,400 | 16,600 | $ 16,400 |
Significant change in expected future minimum lease payments since year end |  |  | 0 |  |
Premises and Equipment |  |  |  |  |
Operating Lease, Right-of-Use Asset | 286,500 |  | 286,500 |  | $ 288,800
Other Liabilities [Member] |  |  |  |  |
Operating Lease, Liability | $ 320,600 |  | $ 320,600 |  | $ 321,900

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- Definition Amount of expense (reversal of expense) for expected credit loss on off-balance sheet commitment, from change in methodology. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-11 + Details
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