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
	Aug. 31, 2020	Aug. 31, 2019
Numerator (basic & diluted):
Net earnings (loss)attributable to controlling interest - income (loss) available to common shareholders	$ 616,675	$ (4,776)
Denominator:
Denominator for basic earnings (loss) per share attributable to controlling interest- weighted average common shares	54,070	55,241
Effect of dilutive securities	872
Denominator for diluted earnings (loss) per share attributable to controlling interest-adjusted weighted average common shares	54,942	55,241
Basic earnings (loss) per share attributable to controlling interest	$ 11.41	$ (0.09)
Diluted earnings (loss) per share attributable to controlling interest	$ 11.22	$ (0.09)