Provision (Benefit) for Income Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Current:
U.S. federal	$ 65,195	$ 20,388	$ 27,206
State and local	17,743	8,623	8,617
Foreign	31,894	37,713	52,658
Total Current	114,832	66,724	88,481
Deferred:
U.S. federal	(19,212)	15,298	(8,054)
State and local	(3,031)	1,414	4,832
Foreign	10,093	(11,278)	(7,468)
Total Deferred	(12,150)	5,434	(10,690)
Provision for Income Taxes	$ 102,682	$ 72,158	$ 77,791