Earnings (Loss) Per Share - Computation of Basic and Diluted Earnings (Loss) Per Share Attributable to Controlling Interest (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2020	Nov. 30, 2019
Numerator (basic & diluted):
Net earnings (loss)attributable to controlling interest - income (loss) available to common shareholders	$ (74,044)	$ 52,086	$ 542,631	$ 47,310
Denominator:
Denominator for basic earnings (loss) per share attributable to controlling interest- weighted average common shares	52,988	55,059	53,532	55,150
Effect of dilutive securities		1,013	907	1,055
Denominator for diluted earnings (loss) per share attributable to controlling interest-adjusted weighted average common shares	52,988	56,072	54,439	56,205
Basic earnings (loss) per share attributable to controlling interest	$ (1.40)	$ 0.95	$ 10.14	$ 0.86
Diluted earnings (loss) per share attributable to controlling interest	$ (1.40)	$ 0.93	$ 9.97	$ 0.84