Environmental and Legal Contingencies (Details 3)		3 Months Ended		9 Months Ended
		Sep. 30, 2019 USD ($) claims-lawsuits	Sep. 30, 2018 USD ($) claims-lawsuits	Sep. 30, 2019 USD ($) claims-lawsuits defendants plaintiffs	Sep. 30, 2018 USD ($) claims-lawsuits	Jun. 14, 2019 USD ($)
Claims with specific dollar claims for damages [Abstract]
Loss Contingency, Jointly And Severally Liable In Litigation | $						$ 8,100,000
Asbestos Claims With Specific Dollar Claim For Damages [Member]
Information on pending asbestos cases [Line Items]
Number of asbestos cases pending | claims-lawsuits	[1]	186		186
Claims with specific dollar claims for damages [Abstract]
Asbestos Lawsuits Pending With Dollars Number Of Plaintiffs | plaintiffs				2,261
Asbestos Lawsuits Pending With Dollars Number Of Defendants | defendants				21,026
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		179		179
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 of Range 2 [Member]
Information on pending asbestos cases [Line Items]
Number of asbestos cases pending | claims-lawsuits		4		4
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		3		3
Claims with specific dollar claims for damages [Abstract]
Amount claimed per plaintiff, lower range | $				$ 5,000,000
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		178		178
Asbestos Issue [Member]
Information on pending asbestos cases [Line Items]
Number of asbestos cases pending | claims-lawsuits		364		364
Claims with specific dollar claims for damages [Abstract]
New Claims Filed | claims-lawsuits		16	13	54	46
Pending Claims Disposed Of | claims-lawsuits		9	10	33	52
Total Amount Paid in Settlements | $		$ 1,900,000	$ 200,000	$ 3,400,000	$ 900,000

[1] Involve a total of 2,261 plaintiffs and 21,026 defendants