Summary of Significant Accounting Policies Other comprehensive income, income tax (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Schedule [Line Items]
Derivatives used in Net Investment Hedge, Tax Benefit (Expense)	$ 2,877	$ (7,784)	$ 9,324
Adjustment for Long-term Intercompany Transactions, Tax Benefit (Expense)	(650)	(2,508)	(1,193)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	(555)	583	(490)
Other Comprehensive Income (Loss), Tax	(2,234)	11,462	(5,237)
Cash Flow Hedging [Member]
Schedule [Line Items]
Income Tax Expense (Benefit)	454	(855)	295
Oher comprehensive income, other items [Member]
Schedule [Line Items]
Other Comprehensive Income (Loss), Tax	$ 108	$ (898)	$ (2,699)