Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Comprehensive income, net of tax:
Net income	$ 219,783	$ 178,687	$ 180,025
Other comprehensive income:
Unrealized gain on interest rate swaps, net	1,926	2,140	2,993
Reclassification adjustment of interest rate swaps, net	(1,141)	(1,467)	(1,624)
Foreign currency translation adjustments	(49,518)	26,428	(10,487)
Total comprehensive income	171,050	205,788	170,907
Tax effects on unrealized gain (loss) on interest rate swaps	(1,026)	(1,125)	(1,647)
Tax effects on reclassification adjustment of interest rate swaps	$ 582	$ 744	$ 874