Commercial Commitments (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Guarantor Obligations [Line Items]
Total commercial commitments	$ 35.8	[1]	$ 37.6	[1]
Lease payment guarantees [Member]
Guarantor Obligations [Line Items]
Total commercial commitments	26.8		28.5
Standby letters of credit [Member]
Guarantor Obligations [Line Items]
Total commercial commitments	8.6		8.7
Performance bonds [Member]
Guarantor Obligations [Line Items]
Total commercial commitments	$ 0.4		$ 0.4

[1] (1) The carrying value of liabilities on the balance sheet for commercial commitments was $4.9 million at March 31, 2015 and $5.1 million at December 31, 2014. The expirations of these commitments range from 2017 to 2023. We are not aware of any event that would require us to satisfy any of our commitments.