Changes in Equity - Summary of Changes in Equity by Component and in Total (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Balance	$ 891,012	$ 1,821,628
Net earnings (loss)	24,008	99,703
Other comprehensive income (loss), net of tax	484	(5,408)
Common shares issued, net of withholding tax	(3,158)	(5,130)
Common shares in non-qualified plans	32	130
Stock-based compensation	6,216	8,995
Purchases and retirement of common shares	(6,803)
Cash dividends declared	(8,550)	(16,081)
Dividends to noncontrolling interests		(1,921)
Balance	903,241	1,901,916
Additional Paid-in Capital
Balance	299,033	290,799
Common shares issued, net of withholding tax	(3,158)	(5,130)
Common shares in non-qualified plans	32	130
Stock-based compensation	6,216	8,995
Purchases and retirement of common shares	(884)
Balance	301,239	294,794
AOCI, Net of Tax
Balance	454	(23,179)
Other comprehensive income (loss), net of tax	484	(5,408)
Balance	938	(28,587)
Retained Earnings
Balance	589,392	1,428,391
Net earnings (loss)	24,253	96,106
Purchases and retirement of common shares	(5,919)
Cash dividends declared	(8,550)	(16,081)
Balance	599,176	1,508,416
Parent
Balance	888,879	1,696,011
Net earnings (loss)	24,253	96,106
Other comprehensive income (loss), net of tax	484	(5,408)
Common shares issued, net of withholding tax	(3,158)	(5,130)
Common shares in non-qualified plans	32	130
Stock-based compensation	6,216	8,995
Purchases and retirement of common shares	(6,803)
Cash dividends declared	(8,550)	(16,081)
Balance	901,353	1,774,623
Noncontrolling Interest
Balance	2,133	125,617
Net earnings (loss)	(245)	3,597
Dividends to noncontrolling interests		(1,921)
Balance	$ 1,888	$ 127,293