Age Analysis of Past Due Financing receivables (Details) $ in Thousands		Dec. 31, 2025 USD ($) loan	Dec. 31, 2024 USD ($) loan
Financing Receivable Impaired [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		716	761
Financing Receivable, before Allowance for Credit Loss	[1]	$ 18,503,777	$ 14,508,378
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		62	28
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		89	37
Number of Loans Total Past Due | loan		867	826
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 24,766	$ 47,521
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		8,814	2,201
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		26,482	37,686
Financial Asset, Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		60,062	87,408
Financial Asset, Not Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 18,443,715	$ 14,420,970
Commercial and Industrial [Member]
Financing Receivable Impaired [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		36	125
Financing Receivable, before Allowance for Credit Loss		$ 4,611,789	$ 3,246,455
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		18	5
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		35	8
Number of Loans Total Past Due | loan		89	138
Commercial and Industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 7,765	$ 5,864
Commercial and Industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		3,627	29
Commercial and Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		5,776	13,872
Commercial and Industrial [Member] | Financial Asset, Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		17,168	19,765
Commercial and Industrial [Member] | Financial Asset, Not Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 4,594,621	$ 3,226,690
Commercial Real Estate [Member]
Financing Receivable Impaired [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		15	4
Financing Receivable, before Allowance for Credit Loss		$ 8,275,408	$ 6,839,705
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		3	0
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		7	3
Number of Loans Total Past Due | loan		25	7
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 7,037	$ 33,860
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		619	0
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		10,103	20,458
Commercial Real Estate [Member] | Financial Asset, Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		17,759	54,318
Commercial Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 8,257,649	$ 6,785,387
Construction Loans [Member]
Financing Receivable Impaired [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		1	0
Financing Receivable, before Allowance for Credit Loss		$ 1,399,193	$ 782,078
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		1	0
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		2	0
Number of Loans Total Past Due | loan		4	0
Construction Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 804	$ 0
Construction Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		488	0
Construction Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		3,693	0
Construction Loans [Member] | Financial Asset, Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		4,985	0
Construction Loans [Member] | Financial Asset, Not Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 1,394,208	$ 782,078
Residential Real Estate [Member]
Financing Receivable Impaired [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		20	27
Financing Receivable, before Allowance for Credit Loss		$ 2,873,443	$ 2,460,600
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		16	9
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		18	10
Number of Loans Total Past Due | loan		54	46
Residential Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 5,592	$ 6,310
Residential Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		3,597	1,401
Residential Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		3,278	2,224
Residential Real Estate [Member] | Financial Asset, Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		12,467	9,935
Residential Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 2,860,976	$ 2,450,665
Home Equity [Member]
Financing Receivable Impaired [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		20	9
Financing Receivable, before Allowance for Credit Loss		$ 1,297,662	$ 1,140,168
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		9	11
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		24	10
Number of Loans Total Past Due | loan		53	30
Home Equity [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 3,247	$ 1,046
Home Equity [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		456	764
Home Equity [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		3,629	1,126
Home Equity [Member] | Financial Asset, Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		7,332	2,936
Home Equity [Member] | Financial Asset, Not Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 1,290,330	$ 1,137,232
Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	[2]	624	596
Financing Receivable, before Allowance for Credit Loss	[2]	$ 46,282	$ 39,372
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	[2]	15	3
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	[2]	3	6
Number of Loans Total Past Due | loan	[2]	642	605
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	[2]	$ 321	$ 441
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	[2]	27	7
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	[2]	3	6
Consumer Portfolio Segment [Member] | Financial Asset, Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	[2]	351	454
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	[2]	$ 45,931	$ 38,918

[1] (2)Loan origination dates in the tables above reflect the original date, or the date of a material modification of a previously originated loan, for both organic originations and acquired loans. (3)Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances and the associated gross write-offs.

[2] Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances.