Fair Value of Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Significant Other Observable Inputs (Level 2)
Liabilities:
Long-term fixed interest rate debt	$ 251.3	$ 255.6
Recurring basis | Total
Assets:
Cash equivalents	7.0	8.2
Restricted cash	6.5	3.7
Foreign exchange contracts		1.8
Embedded derivatives in purchase and delivery contracts	0.8	0.3
Long-term restricted cash	3.8	3.9
Total assets recorded at fair value	18.1	17.9
Liabilities:
Contingent consideration	4.0	3.7
Foreign exchange contracts	3.5
Embedded derivatives in purchase and delivery contracts	0.1	0.3
Fixed price commodity contracts	0.2	0.2
Total liabilities recorded at fair value	7.8	4.2
Recurring basis | Quoted Prices in Active Markets Available (Level 1)
Assets:
Cash equivalents	7.0	8.2
Restricted cash	6.5	3.7
Long-term restricted cash	3.8	3.9
Total assets recorded at fair value	17.3	15.8
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Foreign exchange contracts		1.8
Embedded derivatives in purchase and delivery contracts	0.8	0.3
Total assets recorded at fair value	0.8	2.1
Liabilities:
Foreign exchange contracts	3.5
Embedded derivatives in purchase and delivery contracts	0.1	0.3
Fixed price commodity contracts	0.2	0.2
Total liabilities recorded at fair value	3.8	0.5
Recurring basis | Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent consideration	4.0	3.7
Total liabilities recorded at fair value	$ 4.0	$ 3.7