Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		May 31, 2023	May 31, 2022	May 31, 2021
Income Statement [Abstract]
Net sales		$ 4,916,392	$ 5,242,219	$ 3,171,429
Cost of goods sold		4,253,080	4,527,403	2,532,351
Gross margin		663,312	714,816	639,078
Selling, general and administrative expense		428,872	399,568	351,145
Impairment of long-lived assets		2,596	3,076	13,739
Restructuring and other (income) expense, net		(4,571)	(17,096)	56,097
Separation costs		24,048
Incremental expenses related to Nikola gains				50,624
Operating income		212,367	329,268	167,473
Other income (expense):
Miscellaneous income (expense), net		(1,227)	2,714	2,163
Interest expense, net		(26,759)	(31,337)	(30,346)
Equity in net income of unconsolidated affiliates		160,987	213,641	123,325
Gains on investment in Nikola				(655,102)
Earnings before income taxes		345,368	514,286	917,717
Income tax expense		76,198	115,022	176,267
Net earnings		269,170	399,264	741,450
Net earnings attributable to noncontrolling interests	[1]	12,642	19,878	17,655
Net earnings attributable to controlling interest		$ 256,528	$ 379,386	$ 723,795
Basic
Average common shares outstanding		48,566	49,940	52,701
Earnings per common share attributable to controlling interest		$ 5.28	$ 7.60	$ 13.73
Diluted
Average common shares outstanding		49,386	50,993	53,917
Earnings per common share attributable to controlling interest		$ 5.19	$ 7.44	$ 13.42

[1] Net earnings attributable to noncontrolling interests are not taxable to us.