Loans and Leases and the Allowance for Credit Losses - Schedule of Aging Analysis by Class of Loan and Lease Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 13,321,606	$ 12,259,076
Non-Accrual	12,828	16,634
Total Past Due and Non-Accrual	36,827	45,161
Total Loans and Leases	13,321,606	12,259,076
Non-Accrual Loans and Leases that are Current	5,219	9,900
Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	5,294,351	4,966,192
Non-Accrual	3,445	8,448
Total Past Due and Non-Accrual	3,652	10,468
Total Loans and Leases	5,294,351	4,966,192
Non-Accrual Loans and Leases that are Current	3,445	8,356
Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,368,966	1,361,921
Non-Accrual	49	243
Total Past Due and Non-Accrual	256	2,263
Total Loans and Leases	1,368,966	1,361,921
Non-Accrual Loans and Leases that are Current	49	151
Commercial | Paycheck Protection Program
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	22,955	126,779
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	22,955	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	3,591,943	3,152,130
Non-Accrual	3,396	8,205
Total Past Due and Non-Accrual	3,396	8,205
Total Loans and Leases	3,591,943	3,152,130
Non-Accrual Loans and Leases that are Current	3,396	8,205
Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	236,498	220,254
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	236,498	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	73,989	105,108
Non-Accrual	0	0
Total Past Due and Non-Accrual	0	0
Total Loans and Leases	73,989	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	8,027,255	7,292,884
Non-Accrual	9,383	8,186
Total Past Due and Non-Accrual	33,175	34,693
Total Loans and Leases	8,027,255	7,292,884
Non-Accrual Loans and Leases that are Current	1,774	1,544
Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,585,723	4,309,602
Non-Accrual	4,945	3,305
Total Past Due and Non-Accrual	10,805	9,773
Total Loans and Leases	4,585,723	4,309,602
Non-Accrual Loans and Leases that are Current	878	0
Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Non-Accrual	4,438	4,881
Total Past Due and Non-Accrual	7,914	10,876
Total Loans and Leases	2,185,484	1,836,588
Non-Accrual Loans and Leases that are Current	896	1,544
Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	820,640	736,565
Non-Accrual	0	0
Total Past Due and Non-Accrual	11,339	10,028
Total Loans and Leases	820,640	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	3,117	4,016
Total Loans and Leases	435,408	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	14,924	16,333
30 - 59 Days Past Due | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	132	2,006
30 - 59 Days Past Due | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	132	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	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	14,792	14,327
30 - 59 Days Past Due | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,693	2,046
30 - 59 Days Past Due | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,772	1,791
30 - 59 Days Past Due | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	9,498	7,804
30 - 59 Days Past Due | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,829	2,686
60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,755	4,424
60 - 89 Days Past Due | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	75	14
60 - 89 Days Past Due | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	75	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	3,680	4,410
60 - 89 Days Past Due | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	888	1,263
60 - 89 Days Past Due | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	643	748
60 - 89 Days Past Due | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,374	1,495
60 - 89 Days Past Due | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	775	904
Past Due 90 Days or More
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	5,320	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	5,320	7,770
Past Due 90 Days or More | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,279	3,159
Past Due 90 Days or More | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,061	3,456
Past Due 90 Days or More | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	467	729
Past Due 90 Days or More | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	513	426
Current
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	13,284,779	12,213,915
Current | Commercial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	5,290,699	4,955,724
Current | Commercial | Commercial and Industrial
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	1,368,710	1,359,658
Current | Commercial | Paycheck Protection Program
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	22,955	126,779
Current | Commercial | Commercial Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	3,588,547	3,143,925
Current | Commercial | Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	236,498	220,254
Current | Commercial | Lease Financing
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	73,989	105,108
Current | Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	7,994,080	7,258,191
Current | Consumer | Residential Mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	4,574,918	4,299,829
Current | Consumer | Home Equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	2,177,570	1,825,712
Current | Consumer | Automobile
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	809,301	726,537
Current | Consumer | Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Days Past Due	$ 432,291	$ 406,113