Loans and Leases and the Allowance for Credit Losses - Schedule of Aging Analysis by Class of Loan and Lease Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 12,259,076	$ 11,940,020
Non- Accrual	16,634	16,149
Total Past Due and Non- Accrual	45,161	52,619
Total Loans and Leases	12,259,076	11,940,020
Non- Accrual Loans and Leases that are Current	9,900	8,355
Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,966,192	5,100,686
Non- Accrual	8,448	8,968
Total Past Due and Non- Accrual	10,468	9,218
Total Loans and Leases	4,966,192	5,100,686
Non- Accrual Loans and Leases that are Current	8,356	5,268
Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,361,921	1,357,610
Non- Accrual	243	441
Total Past Due and Non- Accrual	2,263	691
Total Loans and Leases	1,361,921	1,357,610
Non- Accrual Loans and Leases that are Current	151	285
Commercial | PPP
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	126,779	517,683
Non- Accrual	0	0
Total Past Due and Non- Accrual	0	0
Total Loans and Leases	126,779	517,683
Non- Accrual Loans and Leases that are Current	0	0
Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,152,130	2,854,829
Non- Accrual	8,205	8,527
Total Past Due and Non- Accrual	8,205	8,527
Total Loans and Leases	3,152,130	2,854,829
Non- Accrual Loans and Leases that are Current	8,205	4,983
Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	220,254	259,798
Non- Accrual	0	0
Total Past Due and Non- Accrual	0	0
Total Loans and Leases	220,254	259,798
Non- Accrual Loans and Leases that are Current	0	0
Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	105,108	110,766
Non- Accrual	0	0
Total Past Due and Non- Accrual	0	0
Total Loans and Leases	105,108	110,766
Non- Accrual Loans and Leases that are Current	0	0
Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,292,884	6,839,334
Non- Accrual	8,186	7,181
Total Past Due and Non- Accrual	34,693	43,401
Total Loans and Leases	7,292,884	6,839,334
Non- Accrual Loans and Leases that are Current	1,544	3,087
Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non- Accrual	0	0
Total Past Due and Non- Accrual	4,016	5,328
Total Loans and Leases	410,129	395,483
Non- Accrual Loans and Leases that are Current	0	0
Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,309,602	4,130,513
Non- Accrual	3,305	3,223
Total Past Due and Non- Accrual	9,773	14,629
Total Loans and Leases	4,309,602	4,130,513
Non- Accrual Loans and Leases that are Current	0	2,100
Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non- Accrual	4,881	3,958
Total Past Due and Non- Accrual	10,876	13,946
Total Loans and Leases	1,836,588	1,604,538
Non- Accrual Loans and Leases that are Current	1,544	987
Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	736,565	708,800
Non- Accrual	0	0
Total Past Due and Non- Accrual	10,028	9,498
Total Loans and Leases	736,565	708,800
Non- Accrual Loans and Leases that are Current	0	0
30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	16,333	16,577
30 - 59 Days Past Due | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,006	191
30 - 59 Days Past Due | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,006	191
30 - 59 Days Past Due | Commercial | PPP
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
30 - 59 Days Past Due | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
30 - 59 Days Past Due | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
30 - 59 Days Past Due | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
30 - 59 Days Past Due | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	14,327	16,386
30 - 59 Days Past Due | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,686	2,556
30 - 59 Days Past Due | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,046	4,049
30 - 59 Days Past Due | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,791	3,423
30 - 59 Days Past Due | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,804	6,358
60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,424	9,347
60 - 89 Days Past Due | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	14	59
60 - 89 Days Past Due | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	14	59
60 - 89 Days Past Due | Commercial | PPP
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
60 - 89 Days Past Due | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
60 - 89 Days Past Due | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
60 - 89 Days Past Due | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
60 - 89 Days Past Due | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,410	9,288
60 - 89 Days Past Due | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	904	1,612
60 - 89 Days Past Due | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,263	2,083
60 - 89 Days Past Due | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	748	3,378
60 - 89 Days Past Due | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,495	2,215
Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,770	10,546
Past Due 90 Days or More | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Commercial | PPP
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	0	0
Past Due 90 Days or More | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,770	10,546
Past Due 90 Days or More | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	426	1,160
Past Due 90 Days or More | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,159	5,274
Past Due 90 Days or More | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,456	3,187
Past Due 90 Days or More | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	729	925
Current
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	12,213,915	11,887,401
Current | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,955,724	5,091,468
Current | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,359,658	1,356,919
Current | Commercial | PPP
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	126,779	517,683
Current | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,143,925	2,846,302
Current | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	220,254	259,798
Current | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	105,108	110,766
Current | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,258,191	6,795,933
Current | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	406,113	390,155
Current | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,299,829	4,115,884
Current | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,825,712	1,590,592
Current | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 726,537	$ 699,302