Loans and Leases - Schedule of Aging of Accrual and Non-Accrual Loans and Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Financing Receivable, Past Due [Line Items]
Loans and leases	$ 57,868,678	$ 56,597,110
90 or More Days Past Due and Accruing	3	0
Non-accrual	429,117	500,414
Non-accrual with No Allowance	135,390	155,469
Commercial portfolio
Financing Receivable, Past Due [Line Items]
Loans and leases	46,532,049	45,230,196
90 or More Days Past Due and Accruing	3	0
Non-accrual	390,181	464,625
Non-accrual with No Allowance	116,471	138,497
Commercial portfolio \| Commercial non-mortgage
Financing Receivable, Past Due [Line Items]
Loans and leases	21,497,447	20,405,237
90 or More Days Past Due and Accruing	0	0
Non-accrual	174,894	165,378
Non-accrual with No Allowance	42,119	52,284
Commercial portfolio \| Asset-based
Financing Receivable, Past Due [Line Items]
Loans and leases	1,036,823	1,231,231
90 or More Days Past Due and Accruing	0	0
Non-accrual	34,303	66,844
Non-accrual with No Allowance	6,000	774
Commercial portfolio \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans and leases	15,345,465	15,326,007
90 or More Days Past Due and Accruing	0	0
Non-accrual	139,019	182,968
Non-accrual with No Allowance	38,690	53,385
Commercial portfolio \| Multi-family
Financing Receivable, Past Due [Line Items]
Loans and leases	7,447,623	7,008,839
90 or More Days Past Due and Accruing	0	0
Non-accrual	36,535	41,095
Non-accrual with No Allowance	27,335	31,873
Commercial portfolio \| Equipment financing
Financing Receivable, Past Due [Line Items]
Loans and leases	1,204,691	1,258,882
90 or More Days Past Due and Accruing	3	0
Non-accrual	5,430	8,340
Non-accrual with No Allowance	2,327	181
Consumer portfolio
Financing Receivable, Past Due [Line Items]
Loans and leases	11,336,629	11,366,914
90 or More Days Past Due and Accruing	0	0
Non-accrual	38,936	35,789
Non-accrual with No Allowance	18,919	16,972
Consumer portfolio \| Residential
Financing Receivable, Past Due [Line Items]
Loans and leases	9,600,445	9,599,577
90 or More Days Past Due and Accruing	0	0
Non-accrual	19,323	18,187
Non-accrual with No Allowance	8,353	8,284
Consumer portfolio \| Home equity
Financing Receivable, Past Due [Line Items]
Loans and leases	1,341,382	1,370,513
90 or More Days Past Due and Accruing	0	0
Non-accrual	18,653	16,743
Non-accrual with No Allowance	10,566	8,688
Consumer portfolio \| Other consumer
Financing Receivable, Past Due [Line Items]
Loans and leases	394,802	396,824
90 or More Days Past Due and Accruing	0	0
Non-accrual	960	859
Non-accrual with No Allowance	0	0
Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases	546,710	567,074
Total Past Due and Non-accrual \| Commercial portfolio
Financing Receivable, Past Due [Line Items]
Loans and leases	470,937	506,120
Total Past Due and Non-accrual \| Commercial portfolio \| Commercial non-mortgage
Financing Receivable, Past Due [Line Items]
Loans and leases	180,557	179,322
Total Past Due and Non-accrual \| Commercial portfolio \| Asset-based
Financing Receivable, Past Due [Line Items]
Loans and leases	34,303	66,844
Total Past Due and Non-accrual \| Commercial portfolio \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans and leases	166,285	207,508
Total Past Due and Non-accrual \| Commercial portfolio \| Multi-family
Financing Receivable, Past Due [Line Items]
Loans and leases	81,009	41,571
Total Past Due and Non-accrual \| Commercial portfolio \| Equipment financing
Financing Receivable, Past Due [Line Items]
Loans and leases	8,783	10,875
Total Past Due and Non-accrual \| Consumer portfolio
Financing Receivable, Past Due [Line Items]
Loans and leases	75,773	60,954
Total Past Due and Non-accrual \| Consumer portfolio \| Residential
Financing Receivable, Past Due [Line Items]
Loans and leases	44,493	33,424
Total Past Due and Non-accrual \| Consumer portfolio \| Home equity
Financing Receivable, Past Due [Line Items]
Loans and leases	27,561	24,471
Total Past Due and Non-accrual \| Consumer portfolio \| Other consumer
Financing Receivable, Past Due [Line Items]
Loans and leases	3,719	3,059
30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases	69,812	57,989
30-59 Days Past Due and Accruing \| Commercial portfolio
Financing Receivable, Past Due [Line Items]
Loans and leases	43,768	38,854
30-59 Days Past Due and Accruing \| Commercial portfolio \| Commercial non-mortgage
Financing Receivable, Past Due [Line Items]
Loans and leases	4,664	12,397
30-59 Days Past Due and Accruing \| Commercial portfolio \| Asset-based
Financing Receivable, Past Due [Line Items]
Loans and leases	0	0
30-59 Days Past Due and Accruing \| Commercial portfolio \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans and leases	26,485	23,702
30-59 Days Past Due and Accruing \| Commercial portfolio \| Multi-family
Financing Receivable, Past Due [Line Items]
Loans and leases	12,072	476
30-59 Days Past Due and Accruing \| Commercial portfolio \| Equipment financing
Financing Receivable, Past Due [Line Items]
Loans and leases	547	2,279
30-59 Days Past Due and Accruing \| Consumer portfolio
Financing Receivable, Past Due [Line Items]
Loans and leases	26,044	19,135
30-59 Days Past Due and Accruing \| Consumer portfolio \| Residential
Financing Receivable, Past Due [Line Items]
Loans and leases	17,410	12,163
30-59 Days Past Due and Accruing \| Consumer portfolio \| Home equity
Financing Receivable, Past Due [Line Items]
Loans and leases	7,294	5,602
30-59 Days Past Due and Accruing \| Consumer portfolio \| Other consumer
Financing Receivable, Past Due [Line Items]
Loans and leases	1,340	1,370
60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases	47,778	8,671
60-89 Days Past Due and Accruing \| Commercial portfolio
Financing Receivable, Past Due [Line Items]
Loans and leases	36,985	2,641
60-89 Days Past Due and Accruing \| Commercial portfolio \| Commercial non-mortgage
Financing Receivable, Past Due [Line Items]
Loans and leases	999	1,547
60-89 Days Past Due and Accruing \| Commercial portfolio \| Asset-based
Financing Receivable, Past Due [Line Items]
Loans and leases	0	0
60-89 Days Past Due and Accruing \| Commercial portfolio \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans and leases	781	838
60-89 Days Past Due and Accruing \| Commercial portfolio \| Multi-family
Financing Receivable, Past Due [Line Items]
Loans and leases	32,402	0
60-89 Days Past Due and Accruing \| Commercial portfolio \| Equipment financing
Financing Receivable, Past Due [Line Items]
Loans and leases	2,803	256
60-89 Days Past Due and Accruing \| Consumer portfolio
Financing Receivable, Past Due [Line Items]
Loans and leases	10,793	6,030
60-89 Days Past Due and Accruing \| Consumer portfolio \| Residential
Financing Receivable, Past Due [Line Items]
Loans and leases	7,760	3,074
60-89 Days Past Due and Accruing \| Consumer portfolio \| Home equity
Financing Receivable, Past Due [Line Items]
Loans and leases	1,614	2,126
60-89 Days Past Due and Accruing \| Consumer portfolio \| Other consumer
Financing Receivable, Past Due [Line Items]
Loans and leases	1,419	830
Current
Financing Receivable, Past Due [Line Items]
Loans and leases	57,321,968	56,030,036
Current \| Commercial portfolio
Financing Receivable, Past Due [Line Items]
Loans and leases	46,061,112	44,724,076
Current \| Commercial portfolio \| Commercial non-mortgage
Financing Receivable, Past Due [Line Items]
Loans and leases	21,316,890	20,225,915
Current \| Commercial portfolio \| Asset-based
Financing Receivable, Past Due [Line Items]
Loans and leases	1,002,520	1,164,387
Current \| Commercial portfolio \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans and leases	15,179,180	15,118,499
Loans matured in process of refinancing	13,500
Current \| Commercial portfolio \| Multi-family
Financing Receivable, Past Due [Line Items]
Loans and leases	7,366,614	6,967,268
Current \| Commercial portfolio \| Equipment financing
Financing Receivable, Past Due [Line Items]
Loans and leases	1,195,908	1,248,007
Current \| Consumer portfolio
Financing Receivable, Past Due [Line Items]
Loans and leases	11,260,856	11,305,960
Current \| Consumer portfolio \| Residential
Financing Receivable, Past Due [Line Items]
Loans and leases	9,555,952	9,566,153
Current \| Consumer portfolio \| Home equity
Financing Receivable, Past Due [Line Items]
Loans and leases	1,313,821	1,346,042
Current \| Consumer portfolio \| Other consumer
Financing Receivable, Past Due [Line Items]
Loans and leases	$ 391,083	$ 393,765

Amortized cost excluding accrued interest, of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

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