Commitments and Contingencies (Other Disclosures) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended		9 Months Ended		1 Months Ended			9 Months Ended	12 Months Ended
	Mar. 31, 2013	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2013 Natural Disasters and Other Casualty Events	Dec. 31, 2012 Natural Disasters and Other Casualty Events	Sep. 30, 2012 Natural Disasters and Other Casualty Events	Jun. 30, 2013 Natural Disasters and Other Casualty Events	Sep. 30, 2012 Natural Disasters and Other Casualty Events
Extraordinary Item [Line Items]
Operating leases, rent expense, net		$ 0.6	$ 0.6	$ 1.8	$ 2.0
Capitalized cost of new manufacturing lines									0.9	5.2
Acquisition of equipment under capital lease									1.2	4.4
Fair value assumptions, credit adjusted risk-free rate, range minimal amount		3.25%		3.25%
Fair value assumptions, credit adjusted risk-free rate, range maximum amount		5.78%		5.78%
Asset retirement obligation, accretion expense		0.1		0.2
Business combination, indemnification assets, range of outcomes, value, high		3.4		3.4
Business combination, indemnification duration, period taken into account for				2 years
Business combination, indemnification assets, amount as of acquisition date		1.5		1.5
Insurance proceeds payment, from contract manufacturer						14.8	4.2	4.0
Insurance proceeds payment, from contract manufacturer, receivable	8.2
Insurance proceeds payment, from contract manufacturer, forgiveness of capital lease obligations						3.4	2.2
Insurance proceeds payment, from contract manufacturer, outstanding payables						$ 3.2	$ 2.0