Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Jul. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment	$ 2,566,260	$ 1,965,348
Less: Accumulated depreciation and amortization	(624,541)	(537,622)
Property and equipment, net	1,941,719	1,427,726
Land
Property, Plant and Equipment [Line Items]
Property and equipment	1,235,315	939,817
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	932,976	686,615
Transportation and other equipment
Property, Plant and Equipment [Line Items]
Property and equipment	274,422	236,282
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment	70,926	63,200
Software and Software Development Costs
Property, Plant and Equipment [Line Items]
Property and equipment	$ 52,621	$ 39,434