Schedule of Restricted Stock Unit Awards Aggregate Intrinsic Value (Detail) - Restricted Stock Units - USD ($) $ / shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award
Vested	$ 101,679	$ 71,582	$ 46,110
Outstanding	$ 231,763	$ 214,509	$ 154,752
Expected to vest	$ 231,246	$ 210,301	$ 152,374