Investments in Unconsolidated Affiliates - Schedule of Combined Financial Information for Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	May 31, 2022
Investments in and Advances to Affiliates [Line Items]
Cash and cash equivalents	$ 35,768		$ 34,485
Total assets	3,510,142		3,643,023
Current liabilities	784,290		932,261
Short-term borrowings	15,554		47,997
Current maturities of long-term debt	248		265
Long-term debt	690,011		696,345
Other noncurrent liabilities	109,428		115,991
Equity	1,512,600		1,480,752
Total liabilities and equity	3,510,142		3,643,023
Net sales	1,408,665	$ 1,110,818
Gross margin	169,374	219,374
Operating income	66,714	135,797
Depreciation and amortization	28,001	22,064
Income tax expense	19,498	40,150
Net earnings	65,244	141,475
Equity Method Investment, Nonconsolidated Investee, Other
Investments in and Advances to Affiliates [Line Items]
Cash and cash equivalents	18,675		68,563
Other current assets	1,004,636		1,148,029
Noncurrent assets	293,467		369,608
Total assets	1,316,778		1,586,200
Current liabilities	295,494		345,097
Short-term borrowings	5,000		5,943
Current maturities of long-term debt	33,923		33,054
Long-term debt	303,838		306,814
Other noncurrent liabilities	71,715		76,437
Equity	606,808		818,855
Total liabilities and equity	1,316,778		$ 1,586,200
Net sales	823,942	744,995
Gross margin	181,405	189,674
Operating income	137,827	145,988
Depreciation and amortization	8,188	3,215
Interest expense	2,680	2,461
Income tax expense	2,110	7,896
Net earnings	$ 133,238	$ 138,888