Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Apr. 30, 2023	Jul. 31, 2022	Apr. 30, 2022	Jul. 31, 2021	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Cash flows from operating activities:
Net income	$ 75,593	$ 89,470	$ 76,496	$ 61,202	$ 332,991	$ 273,442	$ 105,560
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization					126,907	119,232	108,125
Write-off and amortization of debt discount and debt issuance costs					1,468	2,744	7,568
Equity-based compensation					22,098	17,354	12,872
Gain on disposal of assets					(1,413)	(913)	(1,011)
Deferred income taxes					220	(351)	(10,329)
Other items, net					13,270	5,706	1,552
Changes in assets and liabilities net of effects of acquisitions:
Trade accounts and notes receivable					(37,024)	(162,118)	(101,617)
Inventories					(16,802)	(156,311)	(46,660)
Prepaid expenses and other assets					1,367	(92)	(2,621)
Accounts payable					6,665	28,423	65,446
Accrued compensation and employee benefits					11,754	32,564	4,477
Other accrued expenses and liabilities					(19,764)	19,931	9,942
Cash provided by operating activities					441,737	179,611	153,304
Cash flows from investing activities:
Purchases of property and equipment					(52,672)	(41,082)	(29,873)
Proceeds from sale of assets					2,879	1,922	2,262
Acquisition of businesses, net of cash acquired					(61,677)	(348,050)	(35,976)
Cash used in investing activities					(111,470)	(387,210)	(63,587)
Cash flows from financing activities:
Repayments on revolving credit facilities					(647,247)	(1,178,897)	(102,189)
Borrowings from revolving credit facilities					546,113	1,390,222	14,750
Payments of principal on long-term debt					(5,110)	(5,110)	(8,754)
Payments of principal on finance lease obligations					(35,845)	(31,365)	(30,371)
Borrowings from term loan					0	0	511,000
Repayments of term loan					0	0	(869,427)
Issuance of Senior Notes					0	0	350,000
Repurchases of common stock					(110,776)	(35,488)	(4,160)
Payment of acquisition holdback liability					(13,500)	0	0
Debt issuance costs					(3,157)	0	(6,299)
Proceeds from exercises of stock options					4,715	4,434	7,559
Payments for taxes related to net share settlement of equity awards					(4,005)	(2,850)	(807)
Proceeds from issuance of stock pursuant to employee stock purchase plan					3,203	2,332	2,076
Cash (used in) provided by financing activities					(265,609)	143,278	(136,622)
Effect of exchange rates on cash and cash equivalents					(1,829)	(775)	3,008
Increase (decrease) in cash and cash equivalents					62,829	(65,096)	(43,897)
Cash and cash equivalents, beginning of year		$ 101,916		$ 167,012	101,916	167,012	210,909
Cash and cash equivalents, end of year	$ 164,745		$ 101,916		164,745	101,916	167,012
Supplemental cash flow disclosures:
Cash paid for income taxes					110,366	86,288	46,417
Cash paid for interest					$ 61,752	$ 46,204	$ 49,650