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		6 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
Numerator (basic & diluted):
Net earnings (loss) attributable to controlling interest - income (loss) available to common shareholders	$ 110,301	$ (74,044)	$ 242,792	$ 542,631
Denominator:
Denominator for basic earnings (loss) per share attributable to controlling interest - weighted average common shares	50,381	52,988	50,618	53,532
Effect of dilutive securities	833		914	907
Denominator for diluted earnings (loss) per share attributable to controlling interest - adjusted weighted average common shares	51,214	52,988	51,532	54,439
Basic earnings (loss) per share attributable to controlling interest	$ 2.19	$ (1.40)	$ 4.80	$ 10.14
Diluted earnings (loss) per share attributable to controlling interest	$ 2.15	$ (1.40)	$ 4.71	$ 9.97