Commitments and Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Accrual for environmental loss contingencies	$ 14.2	$ 13.9
Operating lease rent expense	25.7	$ 24.7	$ 23.2
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Due in 2016	13.3
Due in 2017	10.3
Due in 2018	8.7
Due in 2019	6.7
Due in 2020	4.5
Due thereafter	$ 13.3
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