Income Taxes - Income Tax Expense Reconciliation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income taxes computed at the federal statutory rate	$ 333,985	$ 226,387	$ 215,417
State income taxes, net of federal income tax benefit	72,082	47,469	45,770
Excess tax benefits from equity-based compensation	48,369	92,234	101,466
Other, net	(4,014)	(4,837)	(12,465)
Total	$ 353,684	$ 176,785	$ 147,256