Environmental and Legal Contingencies (Details 3)		3 Months Ended
		Mar. 31, 2017 USD ($) claims-lawsuits defendants plaintiffs	Mar. 31, 2016 USD ($) claims-lawsuits
Asbestos Claims With Specific Dollar Claim For Damages [Member]
Information on pending asbestos cases [Line Items]
Number of asbestos cases pending | claims-lawsuits	[1]	136
Claims with specific dollar claims for damages [Abstract]
Asbestos Lawsuits Pending With Dollars Number Of Plaintiffs | plaintiffs		2,336
Asbestos Lawsuits Pending With Dollars Number Of Defendants | defendants		17,601
Asbestos Claims With Specific Dollar Claim For Damages [Member] | Asbestos Claims of Range 1 [Member]
Information on pending asbestos cases [Line Items]
Number of asbestos cases pending | claims-lawsuits		126
Claims with specific dollar claims for damages [Abstract]
Amount claimed per plaintiff, lower range | $		$ 0
Amount claimed per plaintiff, upper range | $		$ 200,000
Asbestos Claims With Specific Dollar Claim For Damages [Member] | Asbestos Claims Range 2 [Member]
Information on pending asbestos cases [Line Items]
Number of asbestos cases pending | claims-lawsuits		6
Claims with specific dollar claims for damages [Abstract]
Amount claimed per plaintiff, lower range | $		$ 200,000
Amount claimed per plaintiff, upper range | $		$ 5,000,000
Asbestos Claims With Specific Dollar Claim For Damages [Member] | Asbestos Claims of Range 3 [Member]
Information on pending asbestos cases [Line Items]
Number of asbestos cases pending | claims-lawsuits		2
Claims with specific dollar claims for damages [Abstract]
Amount claimed per plaintiff, lower range | $		$ 5,000,000
Amount claimed per plaintiff, upper range | $		$ 15,000,000
Asbestos Claims With Specific Dollar Claim For Damages [Member] | Asbestos Claims Range 4 [Member]
Information on pending asbestos cases [Line Items]
Number of asbestos cases pending | claims-lawsuits		2
Claims with specific dollar claims for damages [Abstract]
Amount claimed per plaintiff, lower range | $		$ 15,000,000
Amount claimed per plaintiff, upper range | $		$ 20,000,000
Asbestos Claims Without Specific Dollar Claim For Damages [Member]
Information on pending asbestos cases [Line Items]
Number of asbestos cases pending | claims-lawsuits		210
Asbestos Issue [Member]
Information on pending asbestos cases [Line Items]
Number of asbestos cases pending | claims-lawsuits		346
Claims with specific dollar claims for damages [Abstract]
Loss Contingency, New Claims Filed, Number | claims-lawsuits		18	13
Loss Contingency, Claims Settled and Dismissed, Number | claims-lawsuits		11	46
Amounts paid in asbestos settlements | $		$ 100,000	$ 300,000

[1] Involve a total of 2,336 plaintiffs and 17,601 defendants