Consolidated Statements of Income - USD ($) $ in Thousands		12 Months Ended
		Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2018
Income Statement [Abstract]
Total revenue		$ 9,175,296	$ 9,352,910	$ 8,391,124
Cost of goods sold (exclusive of depreciation and amortization, shown separately below) (a)	[1]	7,030,612	7,398,186	6,621,731
Operating expenses		1,498,043	1,391,279	1,283,046
Depreciation and amortization		251,174	244,387	220,970
Interest, net		53,419	55,656	50,940
Income before income taxes		342,048	263,402	214,437
Federal and state income taxes		78,202	59,516	(103,466)
Net income		$ 263,846	$ 203,886	$ 317,903
Net income per common share
Basic (in Dollars per share)		$ 7.14	$ 5.55	$ 8.41
Diluted (in Dollars per share)		7.10	5.51	8.34
Dividends declared (in Dollars per share)		$ 1.28	$ 1.16	$ 1.04
Excise taxes collected		$ 1,063,000	$ 988,000	$ 919,000

[1] Includes excise taxes of approximately $1,063,000, $988,000 and $919,000