Earnings Per Share - Computation of Basic and Diluted Earnings Per Share Attributable to Controlling Interest (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 31, 2021	Aug. 31, 2020
Numerator (basic & diluted):
Net earnings attributable to controlling interest - income available to common shareholders	$ 132,491	$ 616,675
Denominator:
Denominator for basic earnings per share attributable to controlling interest- weighted average common shares	50,852	54,070
Effect of dilutive securities	1,013	872
Denominator for diluted earnings per share attributable to controlling interest-adjusted weighted average common shares	51,865	54,942
Basic earnings per share attributable to controlling interest	$ 2.61	$ 11.41
Diluted earnings per share attributable to controlling interest	$ 2.55	$ 11.22