Contingencies (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) claim	Dec. 31, 2016 USD ($) claim	Dec. 31, 2015 USD ($) claim
Loss Contingencies [Line Items]
Loss Contingency, Range of Possible Loss, Portion Not Accrued	$ 100.0
Company paid in defense and indemnity in advance of insurers reimbursement	528.7	$ 477.7
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid	$ 51.7	45.3
Accrual for Environmental Loss Contingencies Disclosure [Abstract]
Waste disposal sites with potential liability under the Comprehensive Environmental Response, Compensation and Liability Act	27
Accrual for indicated environmental liabilities	$ 8.3	6.3
Contingencies [Abstract]
Cash and notes received from insurers	270.0	270.0
Estimated future settlement of existing claims [Abstract]
Asbestos-related charge	0.0	703.6	$ 0.0
Asbestos-related charge, net of tax		440.6
Assets
Non-current assets	127.7	178.7
Liabilities [Abstract]
Liability for Asbestos and Environmental Claims, Gross	828.2	$ 879.3
Liability for Asbestos and Environmental Claims, Gross, Period Increase (Decrease)	$ (51.1)
Asbestos Issue [Member]
Contingencies [Abstract]
Number of pending claims | claim	9,225	9,385	10,061
Assets
Non-current assets	$ 386.4	$ 386.4
Total insurance assets	386.4	386.4
Liabilities [Abstract]
Liability for Asbestos and Environmental Claims, Gross	$ 828.2	$ 879.3
Loss Contingency, New Claims Filed, Number | claim	2,116	2,078
Loss Contingency, Claims Dismissed, Number | claim	(1,866)	(2,402)
Loss Contingency, Claims Settled, Number | claim	(410)	(352)
Accounts Payable and Accrued Liabilities [Member] | Asbestos Issue [Member]
Liabilities [Abstract]
Liability for Asbestos and Environmental Claims, Gross	$ 52.5	$ 51.7
Other non-current liabilities | Asbestos Issue [Member]
Liabilities [Abstract]
Liability for Asbestos and Environmental Claims, Gross	$ 775.7	$ 827.6