Commitments And Contingencies (Asbestos Liability) (Detail)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015 USD ($) LegalMatter Claim Insurer_Group Year	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) LegalMatter Claim Insurer_Group Year	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Jul. 02, 2015 USD ($)	Mar. 31, 2015	Sep. 30, 2014 USD ($)	Jun. 16, 2014 USD ($)	Mar. 31, 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. 29, 2012 USD ($)	Mar. 09, 2012 USD ($)	Dec. 31, 2011 USD ($)	Aug. 17, 2011 USD ($)	Feb. 23, 2011 USD ($)	Mar. 23, 2010 USD ($)	Jun. 30, 2009 USD ($)	Jul. 14, 2008 USD ($) Year
Loss Contingencies [Line Items]
Payments for asbestos-related fees and costs, net of insurance recoveries			$ 24,800,000	$ 30,800,000
Current portion of total estimated liability	$ 79,000,000		$ 79,000,000		$ 79,000,000
Airplane Operating Lease Period Years
Fair Value Of Residual Value Guarantee										$ 7,800,000
Fair Value Of Residual Value Guarantee, Fair Value of Operating Lease Asset Threshold										$ 9,500,000
ResidualValueGuaranteePayment												$ 9,500,000
Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Pending claims	42,052	49,770	42,052	49,770	47,507	51,490			44,587			50,899
Number of judgments paid	3		3
Payments for asbestos-related fees and costs, net of insurance recoveries	$ 14,100,000	$ 17,800,000	$ 24,800,000	$ 30,800,000	$ 61,300,000
Cumulative claims resolved | Claim	114,000		114,000
Settlement cost	$ 441,000,000		$ 441,000,000
Average settlement cost per resolved claim				3,800		$ 3,300	$ 6,300
Cumulative average settlement cost per resolved claim	$ 3,900		$ 3,900
Number of years included in methodology base reference period	2		2
Additional quarters included in methodology base reference period	3		3
Estimated payments to current and future claimants	$ 36,000,000,000		$ 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	582,000,000		582,000,000																			$ 894,000,000
Percentage Of Asbestos Liability Attributable To Settlement And Denfese Costs For Future Claims																						80.00%
Current portion of total estimated liability	$ 79,000,000		$ 79,000,000
Number of coverage in place agreements with excess insurer groups	11		11
Number of buyout agreements with excess insurer groups | Insurer_Group	10		10
Aggregate value of policy buyout agreements	$ 82,500,000		$ 82,500,000
Forecasted percentage of liability that would be reimbursed by insurers																						25.00%
Insurance reimbursement asset	140,000,000		140,000,000																			$ 225,000,000
Gross Settlement And Defense Incurred Costs	$ 19,500,000	24,400,000	$ 37,800,000	45,000,000	$ 81,100,000
Frank Paasch | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Jury verdict																					$ 123,000
Share Of Responsibility Of Verdict																					12.50%
Joseph Norris | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Number of years after judgment paid, years | Year																											2
Jury verdict payment including accrued judgment interest																											$ 2,540,000
Earl Haupt | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Number of years after judgment paid, years | Year	2		2
Jury verdict payment																										$ 20,000
James Nelson | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Jury verdict																									$ 14,500,000
Share Of Responsibility Of Verdict																									9.09%
Court judgment against all parties held responsible																								$ 4,000,000
Additional interest on the compensation awarded																								10,000
Larry Bell | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Court judgment																								$ 200,000
Jury verdict																									$ 3,500,000
Share Of Responsibility Of Verdict																									5.00%
Ronald Dummitt | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Court written decision																							$ 8,000,000
Court judgment																							$ 4,900,000
Jury verdict percentage of responsibility.																							99.00%
Jury verdict																							$ 32,000,000
Frank Paasch | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Jury verdict																	$ 2,500,000
Share Of Responsibility Of Verdict																	10.00%
William Paulus | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Jury verdict payment	$ 900,000	$ 900,000	$ 900,000	$ 900,000
Court judgment																				$ 800,000
Share Of Responsibility Of Verdict																				10.00%
Jury Verdict Non-Economic Damages																				$ 6,500,000
Jury Verdict Economic Damages																				$ 400,000
Frank Vincinguerra | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Jury verdict																	$ 2,300,000
Share Of Responsibility Of Verdict																	20.00%
Gerald Suttner | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Court judgment																			$ 100,000
Share Of Responsibility Of Verdict																			4.00%
Plaintiff's Damages																			$ 3,000,000
James Hellam | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Court judgment																		$ 1,282,000
CourtJudgmentIncludingSetoffs																		$ 1,100,000
Share Of Responsibility Of Verdict																		7.00%
Jury Verdict Non-Economic Damages																		$ 4,500,000
Jury Verdict Economic Damages																		$ 900,000
Ivo Peraica | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Court judgment																$ 10,600,000
Jury Verdict Total																35,000,000
Court_Reduced_Verdict																$ 18,000,000
Holdsworth [Member] | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Court judgment															$ 1,700,000
Jury Verdict Total															$ 3,100,000
Lloyd Garvin [Member] | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Compensatory Damages														$ 11,000,000
Additional damages														11,000,000
CourtJudgmentIncludingSetoffs														3,500,000
Court_Reduced_Verdict														2,500,000
Court Reduced damages														$ 3,500,000
Richard DeLisle [Member] | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Court judgment													$ 1,300,000
Jury verdict													$ 8,000,000
Share Of Responsibility Of Verdict													16.00%
Ivan Sweberg [Member] | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Court judgment											$ 5,300,000
Jury Verdict Total											15,000,000
Court_Reduced_Verdict											10,000,000
Selwyn Hackshaw [Member] | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Court judgment											3,100,000
Jury Verdict Total											10,000,000
Court_Reduced_Verdict											$ 6,000,000
James Poage [Member] | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Compensatory Damages								$ 1,500,000
Additional damages								$ 10,000,000
New York | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Pending claims | LegalMatter	18,600		18,600
Mississippi | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Pending claims | LegalMatter	5,100		5,100
Texas | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Pending claims | LegalMatter	5,800		5,800
Ohio | Asbestos Commitments and Contingencies
Loss Contingencies [Line Items]
Pending claims | LegalMatter	300		300