Loans and Leases and the Allowance for Credit Losses - Changes in Allowance for Credit Losses (Detail) - USD ($) $ in Thousands		3 Months Ended
	Apr. 01, 2022	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 1,472,359	$ 1,925,331	$ 1,469,226
Provision for credit losses		120,000	10,000
Net charge-offs
Charge-offs	(242,000)	(94,939)	(51,038)
Recoveries		24,718	44,171
Net (charge-offs) recoveries		(70,221)	(6,867)
Ending balance		1,975,110	1,472,359
Commercial, Financial, Leasing, etc. [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	307,055	502,153	283,899
Provision for credit losses		12,187	28,725
Net charge-offs
Charge-offs		(19,002)	(19,234)
Recoveries		9,441	13,665
Net (charge-offs) recoveries		(9,561)	(5,569)
Ending balance		504,779	307,055
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	539,444	676,684	557,239
Provision for credit losses		95,992	(30,938)
Net charge-offs
Charge-offs		(30,385)	(1,800)
Recoveries		1,330	14,943
Net (charge-offs) recoveries		(29,055)	13,143
Ending balance		743,621	539,444
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	72,581	115,092	71,726
Provision for credit losses		1,522	1,720
Net charge-offs
Charge-offs		(1,701)	(3,972)
Recoveries		1,323	3,107
Net (charge-offs) recoveries		(378)	(865)
Ending balance		113,192	72,581
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 553,279	631,402	556,362
Provision for credit losses		13,343	10,493
Net charge-offs
Charge-offs		(43,851)	(26,032)
Recoveries		12,624	12,456
Net (charge-offs) recoveries		(31,227)	(13,576)
Ending balance		$ 613,518	$ 553,279