Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net earnings (loss)	$ 618,738	$ (2,455)
Other comprehensive income (loss):
Foreign currency translation, net of tax	8,308	4,782
Pension liability adjustment, net of tax	372	1,013
Cash flow hedges, net of tax	2,562	(2,639)
Other comprehensive income	11,242	3,156
Comprehensive income	629,980	701
Comprehensive income attributable to noncontrolling interests	2,063	2,321
Comprehensive income (loss) attributable to controlling interest	$ 627,917	$ (1,620)