Fair Value of Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Carrying value
Liabilities:
Long-term fixed interest rate debt	$ 254
Recurring basis | Total
Assets:
Cash equivalents	10.5
Restricted cash	3.8
Foreign exchange contracts	2.2
Embedded derivatives in purchase and delivery contracts	0.8
Long-term restricted cash	3.9
Total assets recorded at fair value	21.2
Liabilities:
Interest rate swap contracts	0.2
Foreign exchange contracts	0.1
Embedded derivatives in purchase and delivery contracts	0.3
Fixed price commodity contracts	0.1
Total liabilities recorded at fair value	0.7
Recurring basis | Quoted Prices in Active Markets Available (Level 1)
Assets:
Cash equivalents	10.5
Restricted cash	3.8
Long-term restricted cash	3.9
Total assets recorded at fair value	18.2
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Foreign exchange contracts	2.2
Embedded derivatives in purchase and delivery contracts	0.8
Total assets recorded at fair value	3.0
Liabilities:
Interest rate swap contracts	0.2
Foreign exchange contracts	0.1
Embedded derivatives in purchase and delivery contracts	0.3
Fixed price commodity contracts	0.1
Total liabilities recorded at fair value	$ 0.7