Supplementary Balance Sheet Information (Composition Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Oct. 31, 2015	Jul. 31, 2015	Oct. 31, 2014
Property, Plant and Equipment [Line Items]
Land and land improvements	$ 431,798	$ 431,854	$ 409,060
Buildings and building improvements	1,006,033	1,006,821	948,932
Machinery and equipment	814,362	815,946	731,782
Furniture and fixtures	289,173	286,863	268,536
Software	107,063	106,433	98,899
Vehicles	61,546	61,036	55,788
Construction in progress	86,042	53,158	74,996
Gross property, plant and equipment	2,796,017	2,762,111	2,587,993
Accumulated depreciation	(1,407,452)	(1,375,836)	(1,292,463)
Property, plant and equipment, net	$ 1,388,565	$ 1,386,275	$ 1,295,530