Investments in Unconsolidated Affiliates - Schedule of Combined Financial Information for Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Feb. 28, 2022	Nov. 30, 2021	Aug. 31, 2021	Feb. 28, 2021	Nov. 30, 2020	Aug. 31, 2020	Feb. 28, 2022	Feb. 28, 2021	May 31, 2021
Investments in and Advances to Affiliates [Line Items]
Total assets	$ 3,738,160						$ 3,738,160		$ 3,373,245
Current liabilities	1,026,696						1,026,696		787,901
Short-term borrowings	111,909						111,909
Current maturities of long-term debt	277						277		458
Long-term debt	700,739						700,739		710,031
Other noncurrent liabilities	128,256						128,256		82,824
Equity	1,451,366						1,451,366		1,398,193
Total liabilities and equity	3,738,160						3,738,160		3,373,245
Net sales	1,378,235			$ 759,109			3,721,914	$ 2,193,110
Gross margin	143,128			164,098			547,093	412,930
Operating income	37,611			49,772			263,873	57,015
Depreciation and amortization	27,425			21,893			70,579	65,664
Income tax expense	18,683			4,485			90,059	148,818
Net earnings	58,647	$ 113,185	$ 141,475	72,682	$ (68,512)	$ 618,738	313,307	622,908
Equity Method Investment, Nonconsolidated Investee, Other
Investments in and Advances to Affiliates [Line Items]
Cash	12,434						12,434		11,651
Other current assets	1,108,325						1,108,325		733,834
Noncurrent assets	380,016						380,016		382,585
Total assets	1,500,775						1,500,775		1,128,070
Current liabilities	330,237						330,237		232,626
Short-term borrowings	19,101						19,101		1,155
Current maturities of long-term debt	28,690						28,690		30,209
Long-term debt	303,647						303,647		311,871
Other noncurrent liabilities	98,838						98,838		92,209
Equity	720,262						720,262		460,000
Total liabilities and equity	1,500,775						1,500,775		$ 1,128,070
Net sales	789,483			470,988			2,392,643	1,327,506
Gross margin	187,602			103,035			603,778	292,645
Operating income	144,575			79,090			475,341	201,933
Depreciation and amortization	7,831			11,228			23,907	27,630
Interest expense	2,661			2,774			7,833	8,551
Income tax expense	4,478			1,159			20,938	5,211
Net earnings	$ 136,346			$ 76,048			$ 449,149	$ 193,564