Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2025	Jul. 31, 2024
Cash flows from operating activities:
Net income	$ 215,355	$ 180,198
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	108,963	94,409
Amortization of debt issuance costs	516	278
Change in excess replacement cost over LIFO inventory valuation	8,327	2,431
Share-based compensation	15,221	11,036
Loss on disposal of assets and impairment charges	561	2,475
Deferred income taxes	47,457	7,114
Changes in assets and liabilities:
Receivables	(15,873)	(13,133)
Inventories	(6,868)	(25,378)
Prepaid and other current assets	(20,040)	(7,280)
Accounts payable	35,019	17,431
Accrued expenses	(25,729)	(38,750)
Income taxes	5,595	49,994
Other, net	3,913	529
Net cash provided by operating activities	372,417	281,354
Cash flows from investing activities:
Purchase of property and equipment	(110,046)	(100,564)
Payments for acquisition of businesses, net of cash acquired	(9,495)	(18,113)
Proceeds from sales of assets	17,499	6,688
Net cash used in investing activities	(102,042)	(111,989)
Cash flows from financing activities:
Payments of long-term debt and finance lease obligations	(42,163)	(29,316)
Payments of cash dividends	(19,655)	(16,611)
Repurchase of common stock and payment of related excise taxes	(31,251)	0
Tax withholdings on employee share-based awards	(45,895)	(24,932)
Net cash used in financing activities	(138,964)	(70,859)
Net increase in cash and cash equivalents	131,411	98,506
Cash and cash equivalents at beginning of the period	326,662	206,482
Cash and cash equivalents at end of the period	458,073	304,988
Cash paid during the period for:
Interest, net of amount capitalized	26,896	11,845
Income taxes, net	10,050	0
Noncash activities:
Purchased property and equipment in accounts payable	64,905	55,768
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 4,448	$ 221