CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2013	Jan. 31, 2012
Statement of Other Comprehensive Income [Abstract]
Net (loss) income	$ (8,684)	$ (89,954)	$ 18,504	$ (57,222)
Other comprehensive income:
Foreign currency translation adjustments	9,578	(19,410)	28,071	(34,011)
Net investment hedge translation adjustments	(4,431)	10,024	(9,732)	13,252
Long-term intercompany loan translation adjustments	3,184	1,443	1,590	(2,241)
Cash flow hedges:
Net (loss) gain recognized in other comprehensive income	(441)	718	(998)	1,728
Reclassification adjustment for (gains) losses included in net income	(90)	(142)	(557)	635
Total cash flow hedges	(531)	576	(1,555)	2,363
Pension and other post-retirement benefits:
Gain recognized in other comprehensive income	0	0	0	1,105
Actuarial gain amortization	(12)	(63)	(24)	(63)
Prior service credit amortization	(50)	(68)	(101)	(68)
Total pension and other post-retirement benefits	(62)	(131)	(125)	974
Other comprehensive income (loss), before tax	7,738	(7,498)	18,249	(19,663)
Income tax benefit (expense) related to items of other comprehensive income (loss)	1,560	(4,021)	3,815	(8,976)
Other comprehensive income (loss), net of tax	9,298	(11,519)	22,064	(28,639)
Comprehensive income (loss)	$ 614	$ (101,473)	$ 40,568	$ (85,861)