Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Federal, current	$ 1,753,376	$ (177,159)	$ 241,074
State, current	293,752	(4,298)	62,685
Foreign, current	19,695	18,131	8,981
Total current	2,066,823	(163,326)	312,740
Federal, deferred	10,916	177,035	101,946
State, deferred	(3,042)	(25,500)	8,013
Foreign, deferred	3,791	11,301	(10,802)
Total deferred	11,665	162,836	99,157
Total provision for income taxes	$ 2,078,488	$ (490)	$ 411,897