Commitments And Contingencies (Asbestos Liability) (Details)	3 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($) Claim	Dec. 31, 2016 USD ($) Claim	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Oct. 06, 2016 USD ($)	Apr. 22, 2016 USD ($)	Feb. 09, 2016 USD ($)	Dec. 31, 2015	Dec. 31, 2015 Claim	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 ($)	Oct. 23, 2012 USD ($)	Mar. 09, 2012	Aug. 17, 2011 USD ($)	Feb. 23, 2011 USD ($)	Mar. 23, 2010 USD ($)
Loss Contingencies [Line Items]
Pre-tax cash payments		$ 56,000,000	$ 49,900,000		$ 61,300,000
Current portion of total estimated liability	$ 71,000,000	$ 71,000,000	75,000,000
Asbestos Commitments And Contingencies [Member]
Loss Contingencies [Line Items]
Pending claims	36,052	36,052		47,507	51,490				41,090	36,052
Gross Settlement And Defense Incurred Costs		$ 73,500,000	69,400,000	$ 81,100,000
Number of coverage-in-place agreements with excess insurer groups	11	11
Number of buyout agreements with excess insurer groups	10	10
Pre-tax cash payments		$ 56,000,000	49,900,000	61,300,000
Cumulative claims resolved | Claim	124,000	124,000
Settlement cost	$ 483,000,000	$ 483,000,000
Average settlement cost per resolved claim		3,900	$ 3,100	$ 3,800
Cumulative average settlement cost per resolved claim	3,900	3,900
Estimated payments to current and future claimants	36,000,000,000	$ 36,000,000,000
Additional liability	$ 227,000,000
Percentage of mesothelioma claims of total pending asbestos claims	10.00%	10.00%
Percentage of mesothelioma claims of aggregate settlement and defense costs	90.00%	90.00%
Liability for claims	$ 696,000,000	$ 696,000,000
Percentage Of Asbestos Liability Attributable To Settlement And Denfese Costs For Future Claims	80.00%	80.00%
Current portion of total estimated liability	$ 71,000,000	$ 71,000,000
Insurance reimbursement asset	$ 143,000,000	$ 143,000,000
Forecasted liability reimbursement rate	21.00%	21.00%
Aggregate value of policy buyout agreements	$ 82,500,000	$ 82,500,000
Asbestos Commitments And Contingencies [Member] | New York [Member]
Loss Contingencies [Line Items]
Pending claims | Claim										18,300
Asbestos Commitments And Contingencies [Member] | Mississippi [Member]
Loss Contingencies [Line Items]
Pending claims | Claim										4,800
Asbestos Commitments And Contingencies [Member] | Texas [Member]
Loss Contingencies [Line Items]
Pending claims | Claim										1,000
Asbestos Commitments And Contingencies [Member] | Ohio [Member]
Loss Contingencies [Line Items]
Pending claims | Claim										200
Asbestos Commitments And Contingencies [Member] | Ivan Sweberg [Member]
Loss Contingencies [Line Items]
Jury Verdict Total													$ 15,000,000
Court_Reduced_Verdict													10,000,000
Court judgment													5,300,000
Court Judgment Including Set-offs						$ 4,730,000
Asbestos Commitments And Contingencies [Member] | Selwyn Hackshaw [Member]
Loss Contingencies [Line Items]
Jury Verdict Total													10,000,000
Court_Reduced_Verdict													6,000,000
Court judgment													$ 3,100,000
Court Judgment Including Set-offs						0
Asbestos Commitments And Contingencies [Member] | James Nelson [Member]
Loss Contingencies [Line Items]
Share of responsibility of verdict																								9.09%
Jury verdict																								$ 14,500,000
Court judgment against all parties held responsible																							$ 4,000,000
Additional interest on the compensation awarded																							$ 10,000
Asbestos Commitments And Contingencies [Member] | Larry Bell [Member]
Loss Contingencies [Line Items]
Share of responsibility of verdict																								5.00%
Asbestos Commitments And Contingencies [Member] | Ronald Dummitt [Member]
Loss Contingencies [Line Items]
Jury verdict percentage of responsibility																						99.00%
Jury verdict																						$ 32,000,000
Court judgment																						4,900,000
Court written decision																						$ 8,000,000
Asbestos Commitments And Contingencies [Member] | Frank Paasch [Member]
Loss Contingencies [Line Items]
Share of responsibility of verdict																					12.50%
Asbestos Commitments And Contingencies [Member] | Gerald Suttner [Member]
Loss Contingencies [Line Items]
Share of responsibility of verdict																				4.00%
Plaintiff's Damages																				$ 3,000,000
Court judgment																				$ 100,000
Asbestos Commitments And Contingencies [Member] | James Hellam [Member]
Loss Contingencies [Line Items]
Share of responsibility of verdict																			7.00%
Jury Verdict Non-Economic Damages																			$ 4,500,000
Jury Verdict Economic Damages																			900,000
Court judgment																			1,282,000
Court Judgment Including Set-offs																			$ 1,100,000
DamagesReversedInPart											$ 20,000
Asbestos Commitments And Contingencies [Member] | Thomas Amato [Member]
Loss Contingencies [Line Items]
Share of responsibility of verdict																		10.00%
Jury verdict																		$ 2,500,000
Asbestos Commitments And Contingencies [Member] | Frank Vincinguerra [Member]
Loss Contingencies [Line Items]
Share of responsibility of verdict																		20.00%
Jury verdict																		$ 2,300,000
PaidJuryVerdict	$ 600,000
Asbestos Commitments And Contingencies [Member] | Ivo Peraica [Member]
Loss Contingencies [Line Items]
Jury Verdict Total																	$ 35,000,000
Court_Reduced_Verdict																	18,000,000
Court judgment																	$ 10,600,000
Court Judgment Including Set-offs						$ 1,940,000
Asbestos Commitments And Contingencies [Member] | Holdsworth [Member]
Loss Contingencies [Line Items]
Jury Verdict Total																$ 3,100,000
Court judgment																$ 1,700,000
Asbestos Commitments And Contingencies [Member] | Lloyd Garvin [Member]
Loss Contingencies [Line Items]
Additional damages															$ 11,000,000
Court_Reduced_Verdict															2,500,000
Court Reduced damages															3,500,000
Court Judgment Including Set-offs															3,500,000
compensatory_damages															$ 11,000,000
Asbestos Commitments And Contingencies [Member] | Richard DeLisle [Member]
Loss Contingencies [Line Items]
Share of responsibility of verdict														16.00%
Jury verdict														$ 8,000,000
Court judgment														$ 1,300,000
Asbestos Commitments And Contingencies [Member] | James Poage [Member]
Loss Contingencies [Line Items]
Additional damages												$ 10,000,000
Court judgment												10,800,000
compensatory_damages												$ 1,500,000
Asbestos Commitments And Contingencies [Member] | Valent Rabovsky [Member]
Loss Contingencies [Line Items]
Share of responsibility of verdict								30.00%
Jury Verdict Total								$ 1,085,000
Court judgment							$ 400,000