Commitments And Contingencies (Schedule Of Activity Related To Asbestos Claims) (Details) - Asbestos Commitments And Contingencies [Member]	3 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) Claim	Dec. 31, 2015	Dec. 31, 2014	Oct. 06, 2016 USD ($)	Sep. 30, 2016 USD ($)	Apr. 22, 2016 USD ($)	Feb. 09, 2016 USD ($)	Aug. 21, 2015 USD ($)	Jul. 02, 2015 USD ($)	Jun. 16, 2014 USD ($)	Sep. 17, 2013 USD ($)	Sep. 11, 2013 USD ($)	Jul. 31, 2013 USD ($)	Mar. 01, 2013 USD ($)	Feb. 25, 2013 USD ($)	Nov. 28, 2012 USD ($)	Oct. 23, 2012 USD ($)	Aug. 17, 2011 USD ($)	Feb. 23, 2011 USD ($)	Mar. 23, 2010 USD ($)
Loss Contingencies [Line Items]
Estimated Funds Available From Post Bankruptcy Trusts To Pay Current And Future Claimants	$ 36,000,000,000	$ 36,000,000,000	$ 36,000,000,000
Activity Related to Asbestos Claims [Roll Forward]
Beginning claims		41,090	36,052	47,507	51,490
New claims		2,826		2,572	2,743
Settlements		(924)		(954)	(992)
Dismissals		(6,940)		(8,035)	(5,734)
Ending claims	36,052	36,052		41,090	47,507
Increase In Total Asbestos Liability	$ 227,000,000
Mesothelioma Claims Percentage Pending Asbestos Claims	10.00%	10.00%	10.00%
Mesothelioma Claims Percentage Aggregate Settlement Defense Costs	90.00%	90.00%	90.00%
James Nelson [Member]
Loss Contingencies [Line Items]
Jury Verdict																						$ 14,500,000
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment Against All Parties Held Responsible																					$ 4,000,000
Additional Judgment Interest																					$ 10,000
Share Of Responsibility Of Verdict																						9.09%
Thomas Amato [Member]
Loss Contingencies [Line Items]
Jury Verdict																	$ 2,500,000
Activity Related to Asbestos Claims [Roll Forward]
Share Of Responsibility Of Verdict																	10.00%
Ronald Dummitt [Member]
Loss Contingencies [Line Items]
Jury Verdict																				$ 32,000,000
Activity Related to Asbestos Claims [Roll Forward]
Jury verdict percentage of responsibility.																				99.00%
Court written decision																				$ 8,000,000
Court Judgment																				$ 4,900,000
courtjudgmentwithinterest							$ 6,600,000
Gerald Suttner [Member]
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment																			$ 100,000
courtjudgmentwithinterest							$ 200,000
Share Of Responsibility Of Verdict																			4.00%
Plaintiff's Damages																			$ 3,000,000
James Hellam [Member]
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment																		$ 1,282,000
Share Of Responsibility Of Verdict																		7.00%
Jury Verdict Non-Economic Damages																		$ 4,500,000
Jury Verdict Economic Damages																		900,000
CourtJudgmentIncludingSetoffs																		$ 1,100,000
DamagesReversedInPart										$ 20,000
Frank Vincinguerra [Member]
Loss Contingencies [Line Items]
Jury Verdict																	$ 2,300,000
Activity Related to Asbestos Claims [Roll Forward]
Share Of Responsibility Of Verdict																	20.00%
Ivo Peraica [Member]
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment																$ 10,600,000
Reduced Damages						$ 4,250,000
CourtJudgmentIncludingSetoffs						1,940,000
Jury Verdict Total																35,000,000
Court_Reduced_Verdict																$ 18,000,000
Holdsworth [Member]
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment															$ 1,700,000
Jury Verdict Total															3,100,000
Motion to enter judgment															$ 1,000,000
Lloyd Garvin [Member]
Activity Related to Asbestos Claims [Roll Forward]
CourtJudgmentIncludingSetoffs														$ 3,500,000
Court_Reduced_Verdict														2,500,000
Court Reduced damages														3,500,000
compensatory_damages														11,000,000
Additional Damages														$ 11,000,000
Richard DeLisle [Member]
Loss Contingencies [Line Items]
Jury Verdict													$ 8,000,000
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment													$ 1,300,000
Share Of Responsibility Of Verdict													16.00%
Ivan Sweberg [Member]
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment												$ 5,300,000
Reduced Damages						9,500,000
CourtJudgmentIncludingSetoffs						4,730,000
Jury Verdict Total												15,000,000
Court_Reduced_Verdict												10,000,000
Selwyn Hackshaw [Member]
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment												3,100,000
Reduced Damages						3,000,000
CourtJudgmentIncludingSetoffs						$ 0
Jury Verdict Total												10,000,000
Court_Reduced_Verdict												$ 6,000,000
James Poage [Member]
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment											$ 10,800,000
compensatory_damages											1,500,000
Additional Damages											$ 10,000,000
Valent Rabovsky [Member]
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment								$ 400,000
Share Of Responsibility Of Verdict									30.00%
Jury Verdict Total									$ 1,085,000
George Coulbourn [Member]
Activity Related to Asbestos Claims [Roll Forward]
Court Judgment								$ 6,800,000
Share Of Responsibility Of Verdict								20.00%
Jury Verdict Total								$ 9,000,000
Court Reduced damages								$ 5,000,000
NEW YORK
Activity Related to Asbestos Claims [Roll Forward]
Beginning claims | Claim			18,300
Ending claims | Claim
TEXAS
Activity Related to Asbestos Claims [Roll Forward]
Beginning claims | Claim			1,000
Ending claims | Claim
MISSISSIPPI
Activity Related to Asbestos Claims [Roll Forward]
Beginning claims | Claim			4,800
Ending claims | Claim
OHIO
Activity Related to Asbestos Claims [Roll Forward]
Beginning claims | Claim			200
Ending claims | Claim