CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Statement of Comprehensive Income [Abstract]
Net earnings	$ 20,981	$ 17,213	$ 54,974	$ 42,381
Document Fiscal Year Focus			2016
Foreign currency translation adjustments:
Net gain (loss) recognized in other comprehensive loss	24,889	930	$ 10,943	(70,191)
Reclassification adjustment for gains included in net earnings	0	0	0	(34,697)
Total foreign currency translation adjustments	24,889	930	10,943	(104,888)
Net investment hedge translation adjustments	(3,733)	406	(191)	20,833
Long-term intercompany loan translation adjustments:
Net (loss) gain recognized in other comprehensive loss	(2,321)	(801)	(6,141)	82
Reclassification adjustment for gains included in net earnings	0	0	0	(393)
Total intercompany loan translation adjustments	(2,321)	(801)	(6,141)	(311)
Cash flow hedges:
Net (loss) gain recognized in other comprehensive loss	(167)	(455)	(729)	1,386
Reclassification adjustment for gains included in net earnings	169	(457)	(174)	(552)
Total cash flow hedges	2	(912)	(903)	834
Pension and other post-retirement benefits:
Net (loss) gain recognized in other comprehensive income	(2)	1,644	(2)	1,498
Reclassification adjustment for plan curtailment gain included in net earnings	0	(1,741)	0	(1,741)
Actuarial gain amortization	(161)	(106)	(484)	(428)
Prior service credit amortization	0	(40)	(1,035)	(162)
Total pension and other post-retirement benefits	(163)	(243)	(1,521)	(833)
Other comprehensive income (loss), before tax	18,674	(620)	2,187	(84,365)
Income tax (expense) benefit related to items of other comprehensive income	1,313	250	478	(7,730)
Other comprehensive income (loss), net of tax	19,987	(370)	2,665	(92,095)
Comprehensive income (loss)	$ 40,968	$ 16,843	$ 57,639	$ (49,714)