Contingencies (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) claim site	Mar. 31, 2017 USD ($) claim	Dec. 31, 2017 USD ($)
Accrual for environmental loss contingencies [Abstract]
Waste disposal sites with potential liability under the Comprehensive Environmental Response, Compensation and Liability Act | site	27
Accrual for indicated environmental liabilities	$ 8.3		$ 8.3
Timeframe most environmental liabilities will be paid out	5
Loss Contingency Accrual [Roll Forward]
Beginning asbestos liability	$ 828.2	$ 879.3
Indemnity and defense related costs	(14.6)	(13.6)
Ending asbestos liability	$ 813.6	$ 865.7
Asbestos Issue [Member]
Loss Contingency Claims [Roll Forward]
Beginning Claims | claim	9,225	9,385
New Claims Received | claim	503	611
Dismissed Claims | claim	(462)	(392)
Settled Claims | claim	(106)	(120)
Ending Claims | claim	9,160	9,484
Company paid in defense and indemnity in advance of insurers reimbursement	$ 543.3		528.7
Cash and notes received from insurers	270.5		270.0
Loss Contingency, Range of Possible Loss, Portion Not Accrued	100.0
Assets:
Non-current assets	386.4		386.4
Total insurance assets	386.4		386.4
Liabilities:
Accounts payable and accrued expenses	52.3		52.5
Other non-current liabilities	761.3		775.7
Total accrued liabilities	813.6		$ 828.2
Loss Contingency Accrual [Roll Forward]
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid	$ 14.6	$ 13.6