Allowance for Credit Losses - Changes in Allowance for Credit Losses (Parenthetical) (Detail) - USD ($) $ in Thousands		12 Months Ended
	Apr. 01, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses		$ 517,000	$ (75,000)	$ 800,000
Charge-offs		$ (302,957)	$ (338,154)	$ (333,507)
Non PCD Acquired Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses	$ 242,000
Charge-offs	(242,000)
PCD Acquired Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Charge-offs	$ (33,000)