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Discontinued Operations, Assets Held for Sale and Divestitures (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring	$ 0.9	$ 0.7	$ 1.7	$ 8.9
Net sales	$ 283.6	$ 290.3	$ 526.3	552.1
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