Long-Term Debt (Schedule Of Aggregate Maturities For Debt Outstanding) (Details) (USD $)	3 Months Ended		9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013	Jul. 31, 2013
Debt Instrument [Line Items]
Interest Expense, Debt	$ 16,400,000	$ 8,400,000	$ 48,700,000	$ 25,300,000
Amortization of Financing Costs	500,000	500,000	1,500,000	1,500,000
2013	21,000		21,000
2014	867,000		867,000
2015	266,000		266,000
2016	270,000		270,000
2017	271,000		271,000
Thereafter	798,407,000		798,407,000
Total debt	$ 800,102,000	$ 489,758,000	$ 800,102,000	$ 489,758,000	$ 796,922,000