CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 22,553	$ 20,981	$ 70,403	$ 54,974
Document Fiscal Year Focus			2017
Foreign currency translation adjustments:
Foreign currency translation adjustments	4,819	24,889	$ (11,729)	10,943
Net investment hedge translation adjustments	(2,072)	(3,733)	3,376	(191)
Long-term intercompany loan translation adjustments:
Long-term intercompany loan translation adjustments	821	(2,321)	543	(6,141)
Cash flow hedges:
Net loss recognized in other comprehensive loss	508	(167)	402	(729)
Reclassification adjustment for gains included in net earnings	114	169	530	(174)
Total cash flow hedges	622	2	932	(903)
Pension and other post-retirement benefits:
Actuarial gain amortization	0	(2)	72	(2)
Other Comprehensive Income Amortization Of Defined Benefit Plan Actuarial Loss (Gain) Recognized In Net Periodic Benefit Cost Before Tax	(136)	(161)	(408)	(484)
Prior service credit amortization	0	0	0	(1,035)
Total pension and other post-retirement benefits	(136)	(163)	(336)	(1,521)
Other comprehensive loss, before tax	4,054	18,674	(7,214)	2,187
Income tax (expense) benefit related to items of other comprehensive income	821	1,313	(1,380)	478
Other comprehensive loss, net of tax	4,875	19,987	(8,594)	2,665
Comprehensive income	$ 27,428	$ 40,968	$ 61,809	$ 57,639