Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Jul. 31, 2014 Rate		Jul. 31, 2013 Rate		Jul. 31, 2012 Rate
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Tax at statutory rate	35.00%		35.00%		35.00%
Goodwill impairment (1)	(40.30%)	[1]	(53.40%)	[1]	0.00%	[1]
State income taxes, net of federal tax benefit (2)	(1.10%)	[2]	(0.20%)	[2]	0.10%	[2]
International rate differential	(1.30%)		(4.60%)		(6.60%)
Non-creditable withholding taxes	0.00%		(1.50%)		2.30%
Rate variances arising from foreign subsidiary distributions	(7.50%)		(25.30%)		(6.50%)
Adjustments to tax accruals and reserves (3)	25.50%	[3]	1.00%	[3]	7.50%	[3]
Research and development tax credits and section 199 manufacturer’s deduction	3.60%		3.10%		(1.00%)
Effective Income Tax Rate, Non-deductible divestiture fees and account write-offs	(5.20%)
Deferred tax and other adjustments	0.70%		2.40%		(3.40%)
Other, net	(0.10%)		(1.00%)		(1.00%)
Effective tax rate	9.30%		(44.50%)		26.40%

[1] $61.1 million of the total goodwill impairment of $100.4 million recorded during the year ended July 31, 2014 is nondeductible for income tax purposes. $168.9 million of the total goodwill impairment of $190.5 million recorded during the year ended July 31, 2013 is nondeductible for income tax purposes.

[2] Includes a $3.1 million increase in valuation allowances against certain state tax credit carry-forwards during the year ended July 31, 2014.

[3] Includes the reduction of uncertain tax positions resulting from the settlement of certain domestic and foreign income tax audits during the year ended July 31, 2014.