Business Combinations - Narrative (Details) $ in Thousands, $ in Millions	3 Months Ended						9 Months Ended
	Jan. 31, 2025 USD ($)	Oct. 31, 2024 USD ($)	Jul. 31, 2024 USD ($)	Jan. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	Jan. 31, 2025 USD ($)	Jan. 31, 2024 USD ($)	Aug. 26, 2024 USD ($) location	Jul. 02, 2024 USD ($) location	Jul. 02, 2024 CAD ($) location
Business Acquisition [Line Items]
Net sales	$ 1,260,710			$ 1,258,348			$ 4,179,942	$ 4,088,878
Net income (loss)	(21,409)	$ 53,536	$ 57,248	51,905	$ 80,957	$ 86,830	89,375	219,692
Transaction costs (acquisitions and other)	789			$ 765			3,262	$ 3,373
Yvon
Business Acquisition [Line Items]
Number of locations | location										7	7
Contingent consideration arrangement term										5 years	5 years
Yvon | Maximum
Business Acquisition [Line Items]
Contingent consideration										$ 33,500	$ 46.0
Yvon | Minimum
Business Acquisition [Line Items]
Contingent consideration										$ 0
R.S. Elliott Specialty Supply
Business Acquisition [Line Items]
Number of locations | location									5
Fiscal 2025 Acquisitions
Business Acquisition [Line Items]
Net sales							114,300
Net income (loss)							(100)
Goodwill not expected to be deductible for income tax purposes	35,700						35,700
Goodwill expected to be deductible for income tax purposes	31,300						31,300
Trade accounts and notes receivable	52,332						52,332		$ 51,721
Trade accounts and notes receivable, gross	$ 52,500						$ 52,500