Accrued Expenses and Other Current Liabilities (Other Disclosures) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended			3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Mar. 31, 2013	Mar. 31, 2013	Sep. 30, 2012
Customer deposits:
Customer deposits, amounts received, associated with Thailand flood recovery plan					$ 6.8
Capital lease obligations:
Insurance proceeds payment, from contract manufacturer, receivable	8.2
Severance and restructuring accruals:
Continuation of base salary, in weeks						P88W
Continuation of benefits, in months						18 months
Estimated charge related to separation agreement						1.1
Natural Disasters and Other Casualty Events
Capital lease obligations:
Property, plant and equipment, additions				0.9	0.9	5.2
Capital lease obligations incurred					1.2	4.4
Insurance proceeds payment, from contract manufacturer	14.8	4.2	4.0
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