Commitments And Contingencies (Asbestos Liability) (Detail) (USD $)	3 Months Ended			3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014 Asbestos Commitments and Contingencies Claim Insurer_Group	Mar. 31, 2013 Asbestos Commitments and Contingencies Claim	Dec. 31, 2013 Asbestos Commitments and Contingencies Claim	Dec. 31, 2012 Asbestos Commitments and Contingencies Claim	Dec. 31, 2011 Asbestos Commitments and Contingencies	Mar. 09, 2012 Frank Paasch Asbestos Commitments and Contingencies	Jul. 14, 2008 Joseph Norris Asbestos Commitments and Contingencies Year	Jun. 30, 2009 Earl Haupt Asbestos Commitments and Contingencies	Feb. 23, 2011 James Nelson Asbestos Commitments and Contingencies	Mar. 23, 2010 James Nelson Asbestos Commitments and Contingencies	Feb. 23, 2011 Larry Bell Asbestos Commitments and Contingencies	Mar. 23, 2010 Larry Bell Asbestos Commitments and Contingencies	Aug. 17, 2011 Ronald Dummitt Asbestos Commitments and Contingencies	Feb. 25, 2013 Frank Paasch Asbestos Commitments and Contingencies	Aug. 29, 2012 William Paulus Asbestos Commitments and Contingencies	Feb. 25, 2013 Frank Vincinguerra Asbestos Commitments and Contingencies	Oct. 23, 2012 Gerald Suttner Asbestos Commitments and Contingencies	Nov. 28, 2012 James Hellam Asbestos Commitments and Contingencies	Mar. 01, 2013 Ivo Peraica Asbestos Commitments and Contingencies	Jul. 31, 2013 Holdsworth [Member] Asbestos Commitments and Contingencies	Sep. 11, 2013 Lloyd Garvin [Member] Asbestos Commitments and Contingencies	Sep. 17, 2013 Richard DeLisle [Member] Asbestos Commitments and Contingencies	Mar. 31, 2014 New York Asbestos Commitments and Contingencies LegalMatter	Mar. 31, 2014 Mississippi Asbestos Commitments and Contingencies LegalMatter	Mar. 31, 2014 Texas Asbestos Commitments and Contingencies LegalMatter	Mar. 31, 2014 Ohio Asbestos Commitments and Contingencies LegalMatter	Dec. 30, 2009 Maritime Claims [Member] Asbestos Commitments and Contingencies Claim
Loss Contingencies [Line Items]
Total number of maritime claims																														36,448
Plaintiff's Request																							$ 1,100,000
Compensatory Damages																								11,000,000
Court written decision																8,000,000
Pending claims				50,899	56,208	51,490	56,442																			19,000	5,300	9,700	400
Number of judgments paid				2
Number of years after judgment paid, years										2
Jury verdict payment including accrued judgment interest										2,540,000
Jury verdict payment											20,000
Additional damages																								11,000,000
Court judgment														200,000		4,900,000		800,000		100,000	1,282,000	10,600,000			1,300,000
Jury verdict percentage of responsibility.																99.00%
Jury verdict									123,000				14,500,000		3,500,000	32,000,000	2,500,000		2,300,000						8,000,000
Jury Verdict Total																						35,000,000	3,100,000
Court_Reduced_Verdict																						18,000,000
Share Of Responsibility Of Verdict									12.50%				9.09%		5.00%		10.00%	10.00%	20.00%	4.00%	7.00%				16.00%
Plaintiff's Damages																				3,000,000
Court judgment against all parties held responsible												4,000,000
Additional interest on the compensation awarded												10,000
Payments for asbestos-related fees and costs, net of insurance recoveries	12,925,000	10,493,000		12,900,000	10,500,000	62,800,000
Cumulative claims resolved				101,000
Settlement cost				407,000,000
Average settlement cost per resolved claim						3,300	6,300	4,123
Cumulative average settlement cost per resolved claim				4,000
Number of years included in methodology base reference period				2
Additional quarters included in methodology base reference period				3
Estimated payments to current and future claimants				36,000,000,000
Additional liability								285,000,000
Percentage of mesothelioma claims of total pending asbestos claims								8.00%
Percentage of mesothelioma claims of aggregate settlement and defense costs								90.00%
Liability for claims				680,000,000				894,000,000
Percentage Of Asbestos Liability Attributable To Settlement And Denfese Costs For Future Claims								80.00%
Current portion of total estimated liability	88,038,000		88,038,000	88,000,000
Number of coverage in place agreements with excess insurer groups				11
Number of buyout agreements with excess insurer groups				10
Aggregate value of policy buyout agreements				82,500,000
Forecasted percentage of liability that would be reimbursed by insurers								25.00%
Insurance reimbursement asset				166,000,000				225,000,000
Jury Verdict Non-Economic Damages																		6,500,000			4,500,000
Jury Verdict Economic Damages																		400,000			900,000
Gross Settlement And Defense Incurred Costs				$ 20,500,000	$ 20,500,000	$ 90,800,000