Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018 USD ($) claim site	Sep. 30, 2017 USD ($) 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	28
Accrual for indicated environmental liabilities	$ 9.9		$ 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	(36.7)	(41.0)
Ending asbestos liability	$ 791.5	$ 838.3
Asbestos Issue [Member]
Loss Contingency Claims [Roll Forward]
Beginning Claims | claim	9,225	9,385
New Claims Received | claim	1,460	1,597
Dismissed Claims | claim	(1,430)	(1,273)
Settled Claims | claim	(268)	(326)
Ending Claims | claim	8,987	9,383
Company paid in defense and indemnity in advance of insurers reimbursement	$ 565.4		528.7
Cash and notes received from insurers	271.1		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	51.8		52.5
Other non-current liabilities	739.7		775.7
Total accrued liabilities	791.5		$ 828.2
Loss Contingency Accrual [Roll Forward]
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid	$ 36.7	$ 40.9