Other Comprehensive Income Other Comprehensive Income, Tax (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Other Comprehensive Income, Tax [Abstract]
Net investment hedge translation adjustments	$ 302	$ 2,877	$ (7,784)
Long-term intercompany loan settlements	579	(650)	(2,508)
Cash flow hedges	28	454	(855)
Pension and other post-retirement benefits	(1,898)	(555)	583
Other income tax adjustments	(58)	108	(898)
Income tax (expense) benefit related to items of other comprehensive (loss) income	$ (1,047)	$ 2,234	$ (11,462)