Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021	Jul. 31, 2021
Property, Plant and Equipment [Line Items]
Property and Equipment	$ 3,162,180		$ 3,162,180		$ 3,027,396
Less: Accumulated depreciation and amortization	(786,167)		(786,167)		(730,772)
Property and equipment, net	2,376,013		2,376,013		2,296,624
Depreciation	31,400	$ 29,700	61,300	$ 56,800
Land
Property, Plant and Equipment [Line Items]
Property and Equipment	1,479,387		1,479,387		1,428,262
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and Equipment	1,157,589		1,157,589		1,126,414
Transportation and other equipment
Property, Plant and Equipment [Line Items]
Property and Equipment	371,230		371,230		326,622
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and Equipment	82,136		82,136		79,928
Software
Property, Plant and Equipment [Line Items]
Property and Equipment	$ 71,838		$ 71,838		$ 66,170