Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Aug. 31, 2014	Oct. 31, 2014	Oct. 31, 2013
Income Taxes [Abstract]
Effective tax rate		27.60%	32.20%
Tax expense related to intercompany dividend			$ 2.1
Unrecognized tax benefits		15.6
Accrued interest and penalties on unrecognized tax benefits		1.7
Statute of limitations period, average, years		5 years
Maximum possible reduction in amount of unrecognized tax benefits		1.0
Unrecognized tax benefits potential expiration period		12 months
Unrecognized tax benefits in dispute with various taxing authorities		0.2
Cash held by foreign subsidiaries that was repatriated	$ 52.4