Total costs accrued as of the balance sheet date for environmental loss contingencies.

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The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Increase in accrual	$ 4.0us-gaap_LossContingencyLossInPeriod
Accrual for environmental loss contingencies		13.9	12.3
Operating lease rent expense		24.7us-gaap_OperatingLeasesRentExpenseNet	23.2us-gaap_OperatingLeasesRentExpenseNet	21.9us-gaap_OperatingLeasesRentExpenseNet
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Due in 2015		13.3
Due in 2016		10.4
Due in 2017		6.8
Due in 2018		5.3
Due in 2019		3.5
Due thereafter		$ 13.4
Minimum
Operating Leased Assets [Line Items]
Operating lease, contract term		5 years
Operating lease, renewal term		5 years
Maximum
Operating Leased Assets [Line Items]
Operating lease, contract term		25 years
Operating lease, renewal term		10 years