Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Jan. 31, 2022	Jul. 31, 2021
Property, Plant, Equipment, and ROU Assets [Line Items]
Lease right-of-use assets – operating	$ 46,468	$ 42,601
Lease right-of-use assets – finance	6,637	7,010
Total cost	1,705,930	1,628,585
Less accumulated depreciation	(489,607)	(443,454)
Property, plant and equipment, net	1,216,323	1,185,131
Land
Property, Plant, Equipment, and ROU Assets [Line Items]
Property, plant and equipment	146,449	142,746
Buildings and improvements
Property, Plant, Equipment, and ROU Assets [Line Items]
Property, plant and equipment	884,675	837,065
Machinery and equipment
Property, Plant, Equipment, and ROU Assets [Line Items]
Property, plant and equipment	585,149	523,714
Rental vehicles
Property, Plant, Equipment, and ROU Assets [Line Items]
Property, plant and equipment	$ 36,552	$ 75,449