Commitments And Contingencies (Leases and Asbestos Liability) (Details) (USD $)	3 Months Ended	12 Months Ended															0 Months Ended										12 Months Ended
	Mar. 31, 2007	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 Asbestos Commitments And Contingencies [Member] customers		Dec. 31, 2010 Asbestos Commitments And Contingencies [Member] customers		Dec. 31, 2009 Asbestos Commitments And Contingencies [Member] customers		Sep. 30, 2011 Asbestos Commitments And Contingencies [Member] years	Dec. 31, 2008 Asbestos Commitments And Contingencies [Member] customers	Dec. 31, 2011 Asbestos Commitments And Contingencies [Member] New York [Member]	Dec. 31, 2011 Asbestos Commitments And Contingencies [Member] Mississippi [Member]	Dec. 31, 2011 Asbestos Commitments And Contingencies [Member] Texas [Member]	Dec. 31, 2011 Asbestos Commitments And Contingencies [Member] Ohio [Member]	Jul. 14, 2008 Asbestos Commitments And Contingencies [Member] Joseph Norris [Member]	Jun. 30, 2009 Asbestos Commitments And Contingencies [Member] Earl Haupt [Member]	Feb. 23, 2011 Asbestos Commitments And Contingencies [Member] James Nelson [Member]	Mar. 23, 2010 Asbestos Commitments And Contingencies [Member] James Nelson [Member]	Feb. 23, 2011 Asbestos Commitments And Contingencies [Member] Larry Bell [Member]	Mar. 23, 2010 Asbestos Commitments And Contingencies [Member] Larry Bell [Member]	Aug. 17, 2011 Asbestos Commitments And Contingencies [Member] Ronald Dummitt [Member]	Mar. 14, 2008 Asbestos Commitments And Contingencies [Member] James Baccus [Member]	May 16, 2008 Asbestos Commitments And Contingencies [Member] Chief Brewer [Member]	Feb. 02, 2009 Asbestos Commitments And Contingencies [Member] Dennis Woodard [Member]	Dec. 31, 2011 Maximum [Member]	Dec. 31, 2011 Minimum [Member]
Loss Contingencies [Line Items]
Period for operating lease contracts	7 years
Rental expense		$ 27,100,000	$ 24,600,000	$ 25,800,000
Operating lease residual value guarantee by the company, maximum	14,100,000
Residual value guarantee liability		1,800,000
Airplane, fair value	22,100,000
Pending claims					58,658		64,839		66,341			74,872	20,800	5,500	10,000	5,300
Number of judgments paid					2
Number of years after judgment paid																	2
Jury verdict payment including accrued judgment interest																	2,540,000
Jury verdict payment																		20,000
Compensatory damages																								2,450,000
Additional damages																								11,900,000
Jury verdict percentage of responsibility																							99.00%			0.50%
Share of responsibility of verdict																				9.09%		5.00%
Jury verdict																				14,500,000		3,500,000	32,000,000			16,930,000
Court judgment																					200,000				680,000	1,650,000
Court judgment against all parties held responsible																			4,000,000
Number of other defendants in asbestos liability case																			2
Additional interest on the compensation awarded																			10,000
Gross Settlement And Defense Incurred Costs					105,500,000		106,600,000		110,100,000
Number of coverage-in-place agreements with excess insurer groups					11
Number of buyout agreements with excess insurer groups					6
Pre-tax cash payments		(79,277,000)	(66,731,000)	(55,827,000)	79,300,000	[1]	66,700,000	[1]	55,800,000	[1]
Insurance receipts payments from specific entity									14,500,000
Cumulative claims resolved					84,000
Settlement cost					330,000,000
Average settlement cost per resolved claim					4,123		7,036		4,781
Cumulative average settlement cost per resolved claim					4,000
Number of significant factors affecting the asbestos liability estimate					4
Number of years included in methodology base reference period											2
Additional quarters included in methodology base reference period											3
Methodology updated base reference period					11
Percentage of asbestos liability attributable to settlement and defense costs for future claims					80.00%
Number of years dynamics of asbestos liability affected by company bankruptcies																											10	5
Estimated payments to current and future claimants					30,000,000,000
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					894,000,000
Current portion of total estimated liability		100,943,000	100,000,000		101,000,000
Insurance reimbursement asset					225,000,000
Forecasted liability reimbursement rate					25.00%
Aggregate value of policy buyout agreements					$ 79,500,000

[1] The year ended December 31, 2009 includes a $14.5 million payment from Highlands in January 2009.