CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 26,000	$ 22,553	$ 56,109	$ 70,403
Document Fiscal Year Focus			2018
Foreign currency translation adjustments:
Foreign currency translation adjustments	(12,869)	4,819	$ (407)	(11,729)
Net investment hedge and long-term intercompany loan translation adjustments	35	(1,251)	(3,142)	3,919
Cash flow hedges:
Net loss recognized in other comprehensive income (loss)	657	508	119	402
Reclassification adjustment for gains included in net earnings	264	114	446	530
Total cash flow hedges	921	622	565	932
Pension and other post-retirement benefits:
Actuarial gain amortization	0	0	592	72
Other Comprehensive Income Amortization Of Defined Benefit Plan Actuarial Loss (Gain) Recognized In Net Periodic Benefit Cost Before Tax	(163)	(136)	(434)	(408)
Total pension and other post-retirement benefits	(163)	(136)	158	(336)
Other comprehensive income (loss), before tax	(12,076)	4,054	(2,826)	(7,214)
Income tax (expense) benefit related to items of other comprehensive income	(980)	821	(638)	(1,380)
Other comprehensive income (loss), net of tax	(13,056)	4,875	(3,464)	(8,594)
Comprehensive income	$ 12,944	$ 27,428	$ 52,645	$ 61,809