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Supplementary Balance Sheet Information (Composition Of Property, Plant And Equipment) (Details) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2014
Jul. 31, 2014
Oct. 31, 2013
Balance Sheet Related Disclosures [Abstract]      
Land and land improvements $ 409,060 $ 348,328 $ 343,971
Buildings and building improvements 948,932 907,280 885,054
Machinery and equipment 731,782 700,745 647,856
Furniture and fixtures 268,536 269,209 262,334
Software 98,899 98,653 93,188
Vehicles 55,788 55,724 49,789
Construction in progress 74,996 31,487 88,490
Gross property, plant and equipment 2,587,993 2,411,426 2,370,682
Accumulated depreciation (1,292,463) (1,263,436) (1,185,169)
Property, plant and equipment, net $ 1,295,530 $ 1,147,990 $ 1,185,513