Environmental (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Loss Contingencies [Line Items]
Environmental remediation costs	$ 0	$ 1.1	$ 1.3	$ 1.9
Accrued environmental liability	81.0		81.0		87.8
Estimated time frame to remediate contigency			30
Other Long Term Liabilities [Member]
Loss Contingencies [Line Items]
Accrued environmental liability	$ 67.5		$ 67.5		$ 73.6