Goodwill and Other Intangible Assets (Reconciliation Of Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Beginning balance, Gross Carrying Amount	$ 87.1	$ 81.3
Beginning balance, Net Intangible Assets	37.9	36.0
Finite-lived Intangible Assets Acquired		10.0
Beginning balance, Accumulated Amortization	(49.2)	(45.3)
Amortization expense, Accumulated Amortization	(6.1)	(6.8)
Amortization of Intangible Assets	(6.1)	(6.8)
Foreign exchange translation, Gross Carrying Value	3.1	(4.2)
Foreign exchange translation, Accumulated Amortization	(3.0)	2.9
Foreign exchange translation, Net Intangible Assets	0.1	(1.3)
Ending balance, Gross Carrying Amount	96.8	87.1
Ending balance, Accumulated Amortization	(58.3)	(49.2)
Ending balance, Net Intangible Assets	38.5	$ 37.9
Northern Technical
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 6.6