Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Mar. 31, 2015 site	Dec. 31, 2008	Aug. 31, 2013	Dec. 31, 2014 claim
Accrual for environmental loss contingencies [Abstract]
Waste disposal sites with potential liability under the Comprehensive Environmental Response, Compensation and Liability Act	27
Accrual for indicated environmental liabilities	$ 5.6			$ 6.2
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]
Contingencies [Abstract]
Number of pending claims	12,500			13,300
Loss Contingency, Claims Settled and Dismissed, Number	1,300			6,500
Payment being made to a claimant by or on behalf of the company	111			397
Payment being made to a claimant by or on behalf of the company, percentage	9.00%			6.00%
Damages awarded			35.0
Surety bond related to appeal			55.0
Company paid in defense and indemnity in advance of insurers reimbursement	353.1
Cash and notes received from insurers	195.9
Outstanding balance to be fully recovered	157.2			141.9
Assets:
Other non-current assets	113.2			111.8
Total insurance assets	113.2			111.8
Liabilities:
Accounts payable and accrued expenses	47.6			47.4
Other non-current liabilities	65.6			64.4
Total accrued liabilities	113.2			111.8
Non-Compensatory Damages [Member]
Contingencies [Abstract]
Damages awarded			$ 32.5