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Discontinued Operations, Assets Held for Sale and Divestitures (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring	$ 0.7us-gaap_RestructuringCharges	$ 2.7us-gaap_RestructuringCharges	$ 8.9us-gaap_RestructuringCharges	$ 2.8us-gaap_RestructuringCharges
Proceeds from Sale of Productive Assets			4.8	0.3
Net sales	290.3us-gaap_SalesRevenueNet	288.1us-gaap_SalesRevenueNet	552.1us-gaap_SalesRevenueNet	545.5us-gaap_SalesRevenueNet
St. Jerome [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring			7.2
Disposal Group, Including Discontinued Operation, Operating Income (Loss)			2.5
Environmental Remediation Expense			2.3
Severance Costs			2.4
Net sales					$ 11.5