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Supplementary Balance Sheet Information (Composition Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Apr. 30, 2018	Jul. 31, 2017	Apr. 30, 2017
Property, Plant and Equipment [Line Items]
Land and land improvements	$ 553,366	$ 553,655	$ 531,058
Buildings and building improvements	1,194,877	1,210,864	1,170,700
Machinery and equipment	1,024,483	987,080	967,157
Furniture and fixtures	275,959	280,292	275,235
Software	110,789	108,048	105,352
Vehicles	60,266	59,596	61,415
Construction in progress	35,895	49,359	34,029
Gross property, plant and equipment	3,255,635	3,248,894	3,144,946
Accumulated depreciation	(1,614,908)	(1,534,740)	(1,497,942)
Property, plant and equipment, net	$ 1,640,727	$ 1,714,154	$ 1,647,004

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- Definition

Gross amount, as of the balance sheet date, of real estate held for productive use. This excludes land held for sale and alterations to land which improves its potential for use. Generally consisting of items having limited lives, such as walkways, driveways, fences, and parking lots, such improvements are depreciated over the useful lives of the subject assets.

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Gross amount, as of the balance sheet date, of long-lived, depreciable assets that include automobiles and trucks.

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

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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