Environmental (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Loss Contingencies [Line Items]
Environmental remediation costs	$ 1.0	$ 0.6	$ 1.3	$ 0.8
Accrued environmental liability	84.5		84.5		87.8
Estimated time frame to remediate contigency			30
Other Long Term Liabilities [Member]
Loss Contingencies [Line Items]
Accrued environmental liability	$ 69.5		$ 69.5		$ 73.6