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Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jul. 31, 2017	Jul. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment	$ 1,396,050	$ 1,232,328
Less: Accumulated depreciation and amortization	(451,994)	(415,537)
Property and equipment, net	944,056	816,791
Transportation and other equipment
Property, Plant and Equipment [Line Items]
Property and equipment	120,420	85,083
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment	51,778	51,473
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	38,501	49,426
Land
Property, Plant and Equipment [Line Items]
Property and equipment	629,826	556,780
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	$ 555,525	$ 489,566

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
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-Publisher FASB
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-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
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-Section S99
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