Contingencies (Details) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2016 USD ($) claim site	Dec. 31, 2015 USD ($) claim	Dec. 31, 2008 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	$ 4.9	$ 5.4
Timeframe most environmental liabilities will be paid out	5
Contingencies [Abstract]
Loss as a result of the September 2008 DTP ruling			$ 4.0
Asbestos Issue [Member]
Loss Contingencies [Line Items]
Reduction of pending claims, percentage	48.00%
Contingencies [Abstract]
Number of pending claims | claim	9,500	10,100
Loss Contingency, Claims Settled and Dismissed, Number | claim	2,200	5,300
Payment being made to a claimant by or on behalf of the company | claim	256	349
Payment being made to a claimant by or on behalf of the company, percentage	12.00%	7.00%
Company paid in defense and indemnity in advance of insurers reimbursement	$ 424.6
Cash and notes received from insurers	229.6
Outstanding balance to be fully recovered	195.0	$ 163.3
Assets:
Other non-current assets	112.4	108.5
Total insurance assets	112.4	108.5
Liabilities:
Accounts payable and accrued expenses	49.5	47.7
Other non-current liabilities	62.9	60.8
Total accrued liabilities	$ 112.4	$ 108.5