Investments in Unconsolidated Affiliates - Schedule of Combined Financial Information for Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Feb. 28, 2023	Nov. 30, 2022	Aug. 31, 2022	Feb. 28, 2022	Nov. 30, 2021	Aug. 31, 2021	Feb. 28, 2023	Feb. 28, 2022	May 31, 2022
Investments in and Advances to Affiliates [Line Items]
Cash and cash equivalents	$ 267,244						$ 267,244		$ 34,485
Total assets	3,497,672						3,497,672		3,643,023
Current liabilities	664,809						664,809		932,261
Short-term borrowings	3,605						3,605		47,997
Current maturities of long-term debt	261						261		265
Long-term debt	689,339						689,339		696,345
Other noncurrent liabilities	118,736						118,736		115,991
Equity	1,585,426						1,585,426		1,480,752
Total liabilities and equity	3,497,672						3,497,672		3,643,023
Net sales	1,103,322			$ 1,378,235			3,687,528	$ 3,721,914
Gross margin	143,807			143,128			418,944	547,093
Operating income	30,095			37,611			89,795	263,873
Depreciation and amortization	28,153			27,425			84,508	70,579
Income tax expense (benefit)	12,055			18,683			35,684	90,059
Net earnings	50,258	$ 19,505	$ 65,244	58,647	$ 113,185	$ 141,475	135,007	313,307
Equity Method Investment, Nonconsolidated Investee, Other
Investments in and Advances to Affiliates [Line Items]
Cash and cash equivalents	83,482						83,482		68,563
Other current assets	820,978						820,978		1,148,029
Noncurrent assets	308,512						308,512		369,608
Total assets	1,212,972						1,212,972		1,586,200
Current liabilities	213,496						213,496		345,097
Short-term borrowings	10,000						10,000		5,943
Current maturities of long-term debt	48,898						48,898		33,054
Long-term debt	349,161						349,161		306,814
Other noncurrent liabilities	66,538						66,538		76,437
Equity	524,879						524,879		818,855
Total liabilities and equity	1,212,972						1,212,972		$ 1,586,200
Net sales	626,527			789,483			2,162,134	2,392,643
Gross margin	150,698			187,602			479,402	603,778
Operating income	107,994			144,575			353,177	475,341
Depreciation and amortization	6,774			7,831			21,826	23,907
Interest expense	4,607			2,661			11,197	7,833
Income tax expense (benefit)	(3,782)			4,478			(410)	20,938
Net earnings	$ 111,135			$ 136,346			$ 349,556	$ 449,149