Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2017
Property, Plant and Equipment [Line Items]
Total cost	$ 1,362,120	$ 723,531
Less accumulated depreciation	(269,649)	(201,477)
Property, plant and equipment, net	1,092,471	522,054	$ 425,238
Land
Property, Plant and Equipment [Line Items]
Total cost	142,475	57,413
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total cost	742,736	468,824
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Total cost	389,666	197,294
Rental Vehicles
Property, Plant and Equipment [Line Items]
Total cost	$ 87,243	$ 0