CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Statement of Other Comprehensive Income [Abstract]
Net (loss) income	$ (154,535)	$ (17,911)	$ 108,652
Other comprehensive (loss) income:
Foreign currency translation adjustments	(2,312)	(62,827)	62,832
Net investment hedge translation adjustments	(6,537)	20,508	(23,907)
Long-term intercompany loan translation adjustments	3,108	(2,170)	18,545
Cash flow hedges:
Net (loss) gain recognized in other comprehensive income	(652)	2,389	(2,834)
Reclassification adjustment for (gains) losses included in net (loss) earnings	(578)	494	1,793
Total cash flow hedges	(1,230)	2,883	(1,041)
Pension and other post-retirement benefits:
Gain (loss) recognized in other comprehensive income	1,617	(1,015)	1,472
Actuarial gain amortization	(25)	(201)	(63)
Prior service credit amortization	(203)	(203)	(82)
Total pension and other post-retirement benefits	1,389	(1,419)	1,327
Other comprehensive (loss) income, before tax	(5,582)	(43,025)	57,756
Income tax benefit (expense) related to items of other comprehensive (loss) income	2,234	(11,462)	5,237
Other comprehensive (loss) income, net of tax	(3,348)	(54,487)	62,993
Comprehensive (loss) income	$ (157,883)	$ (72,398)	$ 171,645