Loans and Leases and the Allowance for Credit Losses - Schedule of Aging Analysis by Class of Loan and Lease Portfolio (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 12,951,573	$ 12,259,076
Non-Accrual	13,161	16,634
Total Past Due and Non-Accrual	40,731	45,161
Total Loans and Leases	12,951,573	12,259,076
Non-Accrual Loans and Leases that are Current	4,485	9,900
Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	5,155,632	4,966,192
Non-Accrual	3,547	8,448
Total Past Due and Non-Accrual	3,933	10,468
Total Loans and Leases	5,155,632	4,966,192
Non-Accrual Loans and Leases that are Current	3,525	8,356
Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,323,830	1,361,921
Non-Accrual	85	243
Total Past Due and Non-Accrual	180	2,263
Total Loans and Leases	1,323,830	1,361,921
Non-Accrual Loans and Leases that are Current	63	151
Commercial | Paycheck Protection Program
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	31,964	126,779
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	31,964	126,779
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	3,464,126	3,152,130
Non-Accrual	3,462	8,205
Total Past Due and Non-Accrual	3,753	8,205
Total Loans and Leases	3,464,126	3,152,130
Non-Accrual Loans and Leases that are Current	3,462	8,205
Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	246,177	220,254
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	246,177	220,254
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	89,535	105,108
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	89,535	105,108
Non-Accrual Loans and Leases that are Current	0	0
Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,795,941	7,292,884
Non-Accrual	9,614	8,186
Total Past Due and Non-Accrual	36,798	34,693
Total Loans and Leases	7,795,941	7,292,884
Non-Accrual Loans and Leases that are Current	960	1,544
Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,486,571	4,309,602
Non-Accrual	5,179	3,305
Total Past Due and Non-Accrual	13,712	9,773
Total Loans and Leases	4,486,571	4,309,602
Non-Accrual Loans and Leases that are Current	271	0
Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	4,435	4,881
Total Past Due and Non-Accrual	8,889	10,876
Total Loans and Leases	2,101,612	1,836,588
Non-Accrual Loans and Leases that are Current	689	1,544
Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	775,065	736,565
Non-Accrual	0	0
Total Past Due and Non-Accrual	11,125	10,028
Total Loans and Leases	775,065	736,565
Non-Accrual Loans and Leases that are Current	0	0
Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	0	0
Total Past Due and Non-Accrual	3,072	4,016
Total Loans and Leases	432,693	410,129
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	17,934	16,333
30 - 59 Days Past Due | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	374	2,006
30 - 59 Days Past Due | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	83	2,006
30 - 59 Days Past Due | Commercial | Paycheck Protection Program
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	291	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	17,560	14,327
30 - 59 Days Past Due | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,340	2,046
30 - 59 Days Past Due | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,796	1,791
30 - 59 Days Past Due | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	9,617	7,804
30 - 59 Days Past Due | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,807	2,686
60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,102	4,424
60 - 89 Days Past Due | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	12	14
60 - 89 Days Past Due | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	12	14
60 - 89 Days Past Due | Commercial | Paycheck Protection Program
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	4,090	4,410
60 - 89 Days Past Due | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,555	1,263
60 - 89 Days Past Due | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	629	748
60 - 89 Days Past Due | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,149	1,495
60 - 89 Days Past Due | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	757	904
Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	5,534	7,770
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 | Paycheck Protection Program
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	5,534	7,770
Past Due 90 Days or More | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,638	3,159
Past Due 90 Days or More | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,029	3,456
Past Due 90 Days or More | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	359	729
Past Due 90 Days or More | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	508	426
Current
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	12,910,842	12,213,915
Current | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	5,151,699	4,955,724
Current | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,323,650	1,359,658
Current | Commercial | Paycheck Protection Program
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	31,964	126,779
Current | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,460,373	3,143,925
Current | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	246,177	220,254
Current | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	89,535	105,108
Current | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,759,143	7,258,191
Current | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,472,859	4,299,829
Current | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,092,723	1,825,712
Current | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	763,940	726,537
Current | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 429,621	$ 406,113