Other Comprehensive Income Other Comprehensive Income, Text (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Other Comprehensive Income (Loss), Tax [Abstract]
Net investment hedge translation adjustments	$ (1,042)	$ (4,788)	$ (1,381)	$ (7,967)
Long-term intercompany loan settlements	0	501	0	550
Cash flow hedges	56	(394)	554	(597)
Other income tax adjustments and currency translation	7	27	(8)	34
Income tax expense related to items of other comprehensive loss	979	4,654	835	7,980
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance			(45,034)	64,156
Other Comprehensive Income (Loss), before Reclassification			(15,754)	(56,380)
Amounts reclassified from accumulated other comprehensive income			(1,567)	(35,345)
Ending balance	(62,355)	(27,569)	(62,355)	(27,569)
Cash flow hedges
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance			9	(12)
Other Comprehensive Income (Loss), before Reclassification			(141)	1,218
Amounts reclassified from accumulated other comprehensive income			(209)	58
Ending balance	(341)	1,148	(341)	1,148
Unamortized gain on post-retirement plans
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance			3,438	4,854
Other Comprehensive Income (Loss), before Reclassification			0	0
Amounts reclassified from accumulated other comprehensive income			(1,358)	590
Ending balance	2,080	4,264	2,080	4,264
Foreign currency translation adjustments
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance			(48,481)	59,314
Other Comprehensive Income (Loss), before Reclassification			(15,613)	(57,598)
Amounts reclassified from accumulated other comprehensive income			0	34,697
Ending balance	$ (64,094)	$ (32,981)	$ (64,094)	$ (32,981)