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Loans and Leases - Summary Of Loan And Lease Portfolio Aging By Class Of Loan (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	$ 52,505,168	$ 50,726,052
90 or More Days Past Due and Accruing	0	278
Non-accrual	460,725	208,525
Non-accrual With No Allowance	117,602	39,037
Commercial portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	42,068,001	40,929,834
90 or More Days Past Due and Accruing	0	278
Non-accrual	426,426	179,134
Non-accrual With No Allowance	98,451	25,661
Commercial portfolio | Funds held in escrow
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	18,037,942	16,885,475
90 or More Days Past Due and Accruing	0	94
Non-accrual	248,078	122,855
Non-accrual With No Allowance	50,943	20,066
Commercial portfolio | Accounts receivable
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	1,404,007	1,557,841
90 or More Days Past Due and Accruing	0	0
Non-accrual	20,787	35,068
Non-accrual With No Allowance	1,080	1,330
Commercial portfolio | Prepaid expenses
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	14,492,436	13,569,762
90 or More Days Past Due and Accruing	0	184
Non-accrual	120,151	11,383
Non-accrual With No Allowance	26,666	2,681
Commercial portfolio | Total other assets
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	6,898,600	7,587,970
90 or More Days Past Due and Accruing	0	0
Non-accrual	18,043	0
Non-accrual With No Allowance	17,953	0
Commercial portfolio | Equipment financing
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	1,235,016	1,328,786
90 or More Days Past Due and Accruing	0	0
Non-accrual	19,367	9,828
Non-accrual With No Allowance	1,809	1,584
Consumer portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	10,437,167	9,796,218
90 or More Days Past Due and Accruing	0	0
Non-accrual	34,299	29,391
Non-accrual With No Allowance	19,151	13,376
Consumer portfolio | Residential
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	8,853,669	8,227,923
90 or More Days Past Due and Accruing	0	0
Non-accrual	12,750	5,704
Non-accrual With No Allowance	6,923	856
Consumer portfolio | Home equity
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	1,427,692	1,516,955
90 or More Days Past Due and Accruing	0	0
Non-accrual	21,425	23,545
Non-accrual With No Allowance	12,225	12,471
Consumer portfolio | Other consumer
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	155,806	51,340
90 or More Days Past Due and Accruing	0	0
Non-accrual	124	142
Non-accrual With No Allowance	3	49
Total  Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	574,307	255,511
Total  Past Due and Non-accrual | Commercial portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	516,644	195,543
Total  Past Due and Non-accrual | Commercial portfolio | Funds held in escrow
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	255,345	126,109
Total  Past Due and Non-accrual | Commercial portfolio | Accounts receivable
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	42,784	35,068
Total  Past Due and Non-accrual | Commercial portfolio | Prepaid expenses
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	142,824	13,026
Total  Past Due and Non-accrual | Commercial portfolio | Total other assets
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	46,928	7,538
Total  Past Due and Non-accrual | Commercial portfolio | Equipment financing
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	28,763	13,802
Total  Past Due and Non-accrual | Consumer portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	57,663	59,968
Total  Past Due and Non-accrual | Consumer portfolio | Residential
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	26,949	26,816
Total  Past Due and Non-accrual | Consumer portfolio | Home equity
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	30,079	32,506
Total  Past Due and Non-accrual | Consumer portfolio | Other consumer
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	635	646
30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	50,885	33,873
30-59 Days Past Due and Accruing | Commercial portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	34,668	12,893
30-59 Days Past Due and Accruing | Commercial portfolio | Funds held in escrow
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	3,949	2,270
30-59 Days Past Due and Accruing | Commercial portfolio | Accounts receivable
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	0	0
30-59 Days Past Due and Accruing | Commercial portfolio | Prepaid expenses
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	22,115	1,459
30-59 Days Past Due and Accruing | Commercial portfolio | Total other assets
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	2,508	5,198
30-59 Days Past Due and Accruing | Commercial portfolio | Equipment financing
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	6,096	3,966
30-59 Days Past Due and Accruing | Consumer portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	16,217	20,980
30-59 Days Past Due and Accruing | Consumer portfolio | Residential
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	9,595	14,894
30-59 Days Past Due and Accruing | Consumer portfolio | Home equity
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	6,273	5,676
30-59 Days Past Due and Accruing | Consumer portfolio | Other consumer
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	349	410
60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	62,697	12,835
60-89 Days Past Due and Accruing | Commercial portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	55,550	3,238
60-89 Days Past Due and Accruing | Commercial portfolio | Funds held in escrow
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	3,318	890
60-89 Days Past Due and Accruing | Commercial portfolio | Accounts receivable
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	21,997	0
60-89 Days Past Due and Accruing | Commercial portfolio | Prepaid expenses
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	558	0
60-89 Days Past Due and Accruing | Commercial portfolio | Total other assets
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	26,377	2,340
60-89 Days Past Due and Accruing | Commercial portfolio | Equipment financing
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	3,300	8
60-89 Days Past Due and Accruing | Consumer portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	7,147	9,597
60-89 Days Past Due and Accruing | Consumer portfolio | Residential
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	4,604	6,218
60-89 Days Past Due and Accruing | Consumer portfolio | Home equity
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	2,381	3,285
60-89 Days Past Due and Accruing | Consumer portfolio | Other consumer
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	162	94
Current
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	51,930,861	50,470,541
Current | Commercial portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	41,551,357	40,734,291
Current | Commercial portfolio | Funds held in escrow
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	17,782,597	16,759,366
Current | Commercial portfolio | Accounts receivable
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	1,361,223	1,522,773
Current | Commercial portfolio | Prepaid expenses
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	14,349,612	13,556,736
Current | Commercial portfolio | Total other assets
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	6,851,672	7,580,432
Current | Commercial portfolio | Equipment financing
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	1,206,253	1,314,984
Current | Consumer portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	10,379,504	9,736,250
Current | Consumer portfolio | Residential
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	8,826,720	8,201,107
Current | Consumer portfolio | Home equity
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	1,397,613	1,484,449
Current | Consumer portfolio | Other consumer
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	155,171	$ 50,694
In Process | Commercial portfolio
Financing Receivable, Past Due [Line Items]
Total Loans and Leases	$ 32,700

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