Income Taxes - Components of Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current
Federal	$ 331,714	$ 267,550	$ 359,668
State and local	85,354	98,431	132,696
Total current	417,068	365,981	492,364
Deferred
Federal	71,880	(22,894)	40,769
State and local	15,279	(8,397)	16,779
Total deferred	87,159	(31,291)	57,548
Amortization of investments in qualified affordable housing projects	92,176	81,679	68,200
Income taxes	$ 596,403	$ 416,369	$ 618,112