Income Taxes - Schedule of Unrecognized Tax Benefit Rollforward (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Unrecognized Tax Benefits:
Beginning balance	$ 37,575	$ 36,532	$ 22,343
Additions based on tax positions related to the current year	4,596	4,015	6,983
Additions for tax positions of prior years	0	2,809	9,460
Reductions for tax positions of prior years	(14,569)	0	0
Lapse of statute of limitations	(3,711)	(5,613)	(949)
Settlements with tax authorities	(5,832)	(590)	0
Cumulative Translation Adjustments and other	(210)	422	(1,305)
Ending balance	$ 17,849	$ 37,575	$ 36,532