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Long-Term Debt (Schedule Of Aggregate Maturities For Debt Outstanding) (Details) (USD $)	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Jul. 31, 2013
Debt Instrument [Line Items]
Interest Expense, Debt	$ 16,100,000	$ 8,400,000
Amortization of Financing Costs	500,000	500,000
2013	772,000
2014	854,000
2015	262,000
2016	265,000
2017	271,000
Thereafter	795,641,000
Total debt	$ 798,065,000	$ 490,373,000	$ 796,922,000

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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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