Loans and Leases (Nonaccrual) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	$ 197,441	$ 109,927
Total  Past Due and Non-accrual	42,059	40,704
Interest on non-accrual loans that would have been recorded as additional interest income	16,900	11,000	$ 9,700
Commercial
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	143,945	70,467
Total  Past Due and Non-accrual	16,419	11,198
Commercial | Commercial non-mortgage
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	71,884	59,607
Total  Past Due and Non-accrual	12,598	4,802
Commercial | Asset-based
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	20,024	2,086
Total  Past Due and Non-accrual	1,491	2,086
Commercial | Commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	39,057	5,046
Total  Past Due and Non-accrual	90	4,310
Commercial | 6172 Finance Lessors [Member]
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	12,344	3,728
Total  Past Due and Non-accrual	2,240	0
Consumer
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	53,496	39,460
Total  Past Due and Non-accrual	25,640	29,506
Consumer | Residential
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	25,424	15,747
Total  Past Due and Non-accrual	10,442	10,584
Consumer | Home equity
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	27,924	23,489
Total  Past Due and Non-accrual	15,193	18,920
Consumer | 522291 Consumer Lending [Member]
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	148	224
Total  Past Due and Non-accrual	$ 5	$ 2