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Supplementary Balance Sheet Information (Composition Of Property, Plant And Equipment) (Details) - USD ($)
$ in Thousands
Jul. 31, 2015
Jul. 31, 2014
Balance Sheet Related Disclosures [Abstract]    
Land and land improvements $ 431,854 $ 348,328
Buildings and building improvements 1,006,821 907,280
Machinery and equipment 815,946 700,745
Furniture and fixtures 286,863 269,209
Software 106,433 98,653
Vehicles 61,036 55,724
Construction in progress 53,158 31,487
Gross property, plant and equipment 2,762,111 2,411,426
Accumulated depreciation (1,375,836) (1,263,436)
Property, plant and equipment, net $ 1,386,275 $ 1,147,990