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Supplementary Balance Sheet Information (Composition Of Property, Plant And Equipment) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jul. 31, 2016
Jul. 31, 2015
Jul. 31, 2014
Balance Sheet Related Disclosures [Abstract]      
Property, Plant and Equipment Impairment or Disposal Disclosure 67.4    
Depreciation $ 156,800 $ 144,000 $ 136,600
Current Fiscal Year End Date --07-31    
Land and land improvements $ 440,300 431,854  
Buildings and building improvements 1,025,515 1,006,821  
Machinery and equipment 866,008 815,946  
Furniture and fixtures 284,959 286,863  
Software 103,754 106,433  
Vehicles 58,159 61,036  
Construction in progress 39,396 53,158  
Gross property, plant and equipment 2,818,091 2,762,111  
Accumulated depreciation (1,454,277) (1,375,836)  
Property, plant and equipment, net $ 1,363,814 $ 1,386,275