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Long-Term Debt (Schedule Of Aggregate Maturities For Debt Outstanding) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013	Jul. 31, 2013
Debt Instrument [Line Items]
Interest Expense, Debt	$ 16,200,000	$ 8,500,000	$ 32,300,000	$ 16,900,000
Amortization of Financing Costs	500,000	500,000	1,000,000	1,000,000
2013	733,000		733,000
2014	717,000		717,000
2015	266,000		266,000
2016	270,000		270,000
2017	271,000		271,000
Thereafter	797,027,000		797,027,000
Total debt	$ 799,284,000	$ 490,303,000	$ 799,284,000	$ 490,303,000	$ 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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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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