Changes in Equity - Summary of Changes in Equity by Component and in Total (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Balance	$ 1,613,962	$ 1,551,695
Net earnings	65,244	141,475
Other comprehensive income (loss)	(20,462)	(4,274)
Common shares issued, net of withholding tax	(3,466)	4,091
Common shares in non-qualified plans	136	89
Stock-based compensation	6,976	6,324
Purchases and retirement of common shares		(60,885)
Cash dividends declared	(15,418)	(14,504)
Dividends to noncontrolling interests		(9,197)
Balance	1,646,972	1,606,632
Additional Paid-in Capital
Balance	273,439	282,790
Net earnings	0	0
Other comprehensive income (loss)	0	0
Common shares issued, net of withholding tax	(3,466)	4,091
Common shares in non-qualified plans	136	89
Stock-based compensation	6,976	6,324
Purchases and retirement of common shares		(5,477)
Cash dividends declared	0	0
Dividends to noncontrolling interests		0
Balance	277,085	279,635
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	(22,850)	45,387
Net earnings	0	0
Other comprehensive income (loss)	(20,462)	(4,274)
Common shares issued, net of withholding tax	0	0
Common shares in non-qualified plans	0	0
Stock-based compensation	0	0
Purchases and retirement of common shares		0
Cash dividends declared	0	0
Dividends to noncontrolling interests		0
Balance	(43,312)	41,113
Retained Earnings
Balance	1,230,163	1,070,016
Net earnings	64,082	132,491
Other comprehensive income (loss)	0	0
Common shares issued, net of withholding tax	0	0
Common shares in non-qualified plans	0	0
Stock-based compensation	0	0
Purchases and retirement of common shares		(55,408)
Cash dividends declared	(15,418)	14,504
Dividends to noncontrolling interests		0
Balance	1,278,827	1,132,595
Parent
Balance	1,480,752	1,398,193
Net earnings	64,082	132,491
Other comprehensive income (loss)	(20,462)	(4,274)
Common shares issued, net of withholding tax	(3,466)	4,091
Common shares in non-qualified plans	136	89
Stock-based compensation	6,976	6,324
Purchases and retirement of common shares		(60,885)
Cash dividends declared	(15,418)	(14,504)
Dividends to noncontrolling interests		0
Balance	1,512,600	1,453,343
Noncontrolling Interest
Balance	133,210	153,502
Net earnings	1,162	8,984
Other comprehensive income (loss)	0	0
Common shares issued, net of withholding tax	0	0
Common shares in non-qualified plans	0	0
Stock-based compensation	0	0
Purchases and retirement of common shares		0
Cash dividends declared	0	0
Dividends to noncontrolling interests		(9,197)
Balance	$ 134,372	$ 153,289