Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Oct. 31, 2021	Jul. 31, 2021
Property, Plant, Equipment, and ROU Assets [Line Items]
Lease right-of-use assets – operating	$ 47,335	$ 42,601
Lease right-of-use assets – finance	6,823	7,010
Total cost	1,689,040	1,628,585
Less accumulated depreciation	(471,017)	(443,454)
Property, plant and equipment, net	1,218,023	1,185,131
Land
Property, Plant, Equipment, and ROU Assets [Line Items]
Property, plant and equipment	149,202	142,746
Buildings and improvements
Property, Plant, Equipment, and ROU Assets [Line Items]
Property, plant and equipment	847,315	837,065
Machinery and equipment
Property, Plant, Equipment, and ROU Assets [Line Items]
Property, plant and equipment	568,617	523,714
Rental vehicles
Property, Plant, Equipment, and ROU Assets [Line Items]
Property, plant and equipment	$ 69,748	$ 75,449