Loans and the Allowance for Credit Losses - Summary of Aging Analysis of Portfolio Loans Restructured (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Total modified loan	$ 10,888,688	$ 10,702,728
ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	17,007
Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	692,001	695,065
Home Equity [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	291
Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	1,519,808	1,579,395
Commercial and Industrial [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	6,843
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	6,197,844	6,061,344
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	731,173	943,887
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	6,000
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	5,466,671	5,117,457
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	3,738
Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	2,251,423	2,140,584
Residential Real Estate [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	101
Consumer [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	227,612	226,340
Consumer [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	34
30-59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	9,435	11,222
30-59 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	2,727	3,885
30-59 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	652	1,427
30-59 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	981	2,147
30-59 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	12
30-59 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	969	2,147
30-59 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	2,813	853
30-59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	2,262	2,910
60-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	5,373	6,621
60-89 Days Past Due [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	2
60-89 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	1,251	621
60-89 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	1,204	519
60-89 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	476	1,241
60-89 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	156	910
60-89 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	320	331
60-89 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	1,865	3,536
60-89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	577	704
60-89 Days Past Due [Member] | Consumer [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	2
90 Days or More Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	24,409	30,986
90 Days or More Past Due [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	61
90 Days or More Past Due [Member] | Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	3,976	3,797
90 Days or More Past Due [Member] | Home Equity [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	41
90 Days or More Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	2,601	3,138
90 Days or More Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	12,474	16,378
90 Days or More Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan		741
90 Days or More Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	12,474	15,637
90 Days or More Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	4,823	7,100
90 Days or More Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	535	573
90 Days or More Past Due [Member] | Consumer [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	20
Total Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	39,217	48,829
Total Past Due [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	63
Total Past Due [Member] | Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	7,954	8,303
Total Past Due [Member] | Home Equity [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	41
Total Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	4,457	5,084
Total Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	13,931	19,766
Total Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	168	1,651
Total Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	13,763	18,115
Total Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	9,501	11,489
Total Past Due [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	3,374	4,187
Total Past Due [Member] | Consumer [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	22
Current [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	10,849,471	10,653,899
Current [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	16,944
Current [Member] | Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	684,047	686,762
Current [Member] | Home Equity [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	250
Current [Member] | Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	1,515,351	1,574,311
Current [Member] | Commercial and Industrial [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	6,843
Current [Member] | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	6,183,913	6,041,578
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	731,005	942,236
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	6,000
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	5,452,908	5,099,342
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	3,738
Current [Member] | Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	2,241,922	2,129,095
Current [Member] | Residential Real Estate [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	101
Current [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	224,238	$ 222,153
Current [Member] | Consumer [Member] | ASU 2022-02 [Member]
Financing Receivable, Past Due [Line Items]
Total modified loan	$ 12