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Loans and Leases - Summary of Loans and Leases by Segment (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | $ 52,505,168 | $ 50,726,052
Commercial portfolio |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | 42,068,001 | 40,929,834
Commercial portfolio | Funds held in escrow |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | 18,037,942 | 16,885,475
Commercial portfolio | Accounts receivable |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | 1,404,007 | 1,557,841
Commercial portfolio | Prepaid expenses |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | 14,492,436 | 13,569,762
Commercial portfolio | Total other assets |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | 6,898,600 | 7,587,970
Commercial portfolio | Equipment financing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | 1,235,016 | 1,328,786
Consumer portfolio |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | 10,437,167 | 9,796,218
Consumer portfolio | Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | 8,853,669 | 8,227,923
Consumer portfolio | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | 1,427,692 | 1,516,955
Consumer portfolio | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans and Leases | $ 155,806 | $ 51,340

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