Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	6 Months Ended
	Jan. 31, 2012	Jul. 31, 2011
Goodwill And Other Intangible Assets [Abstract]
Other intangible assets	$ 49,543,000	$ 53,496,000
Decrease of balance from other intangible assets	4,000,000
Amortization of existing intangible assets	3,000,000
Foreign exchange translation of intangible assets	$ (1,000,000)