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Supplementary Balance Sheet Information (Composition Of Property, Plant And Equipment) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Jul. 31, 2017
Balance Sheet Related Disclosures [Abstract]      
Depreciation $ 210,700 $ 199,200 $ 180,800
Land and land improvements 619,561 552,271  
Buildings and building improvements 1,284,438 1,193,528  
Machinery and equipment 1,160,817 1,007,250  
Furniture and fixtures 309,271 283,694  
Software 118,815 113,699  
Vehicles 65,556 60,697  
Construction in progress 79,282 59,579  
Gross property, plant and equipment 3,637,740 3,270,718  
Accumulated depreciation (1,795,240) (1,643,499)  
Property, plant and equipment, net $ 1,842,500 $ 1,627,219