Supplementary Balance Sheet Information (Composition Of Property, Plant And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2014	Jul. 31, 2013
Balance Sheet Related Disclosures [Abstract]
Land and land improvements	$ 348,328	$ 343,982
Buildings and building improvements	907,280	884,307
Machinery and equipment	700,745	646,102
Furniture and fixtures	269,209	259,693
Software	98,653	92,553
Vehicles	55,724	49,356
Construction in progress	31,487	49,102
Gross property, plant and equipment	2,411,426	2,325,095
Accumulated depreciation	(1,263,436)	(1,155,807)
Property, plant and equipment, net	$ 1,147,990	$ 1,169,288