Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2024	Jan. 31, 2023
Income Statement [Abstract]
Total revenue	$ 3,329,247	$ 3,332,555	$ 11,262,898	$ 11,765,774
Cost of goods sold (exclusive of depreciation and amortization, shown separately below)	2,542,724	2,595,093	8,713,060	9,381,120
Operating expenses	568,908	515,735	1,709,466	1,598,213
Depreciation and amortization	88,950	78,088	257,453	232,500
Interest, net	14,146	11,697	38,947	39,015
Income before income taxes	114,519	131,942	543,972	514,926
Federal and state income taxes	27,586	31,830	129,020	124,327
Net income	$ 86,933	$ 100,112	$ 414,952	$ 390,599
Net income per common share
Basic (in dollars per share)	$ 2.34	$ 2.69	$ 11.15	$ 10.48
Diluted (in dollars per share)	$ 2.33	$ 2.67	$ 11.09	$ 10.42
Basic weighted average shares outstanding (in shares)	37,100,143	37,281,103	37,210,007	37,261,049
Plus effect of stock compensation (in shares)	235,940	283,448	199,531	240,459
Diluted weighted average shares outstanding (in shares)	37,336,083	37,564,551	37,409,538	37,501,508
Dividends declared per share (in dollars per share)	$ 0.43	$ 0.38	$ 1.29	$ 1.14