Commitments And Contingencies (Schedule Of Activity Related To Asbestos Claims) (Details) (Asbestos Commitments And Contingencies [Member])	12 Months Ended
	Dec. 31, 2012 customers Claim		Dec. 31, 2011 customers		Dec. 31, 2010 customers		Dec. 31, 2012 Maritime Claims [Member] Claim Action	Dec. 31, 2010 Maritime Claims [Member] Action	Dec. 30, 2009 Maritime Claims [Member] Action
Activity Related to Asbestos Claims [Roll Forward]
Beginning claims	58,658		64,839		66,341
New claims	3,542		3,748		5,032
Settlements	(1,030)		(1,117)		(1,127)
Dismissals	(4,919)		(11,059)		(6,363)
MARDOC claims	191	[1]	2,247	[1]	956	[1]	3,391
Ending claims	56,442		58,658		64,839
Total number of maritime claims									36,448
Claims permanently dismissed							26,562
Maritime actions								8
Remaining claims							6,503

[1] As of January 1, 2010, the Company was named in 36,448 maritime actions which had been administratively dismissed by the United States District Court for the Eastern District of Pennsylvania (“MARDOC claims”), and therefore were not included in “Beginning claims”. As of December 31, 2012, pursuant to an ongoing review process initiated by the Court, 26,562 claims were permanently dismissed and 3,391 claims remain active (and have been added to “Ending claims”). In addition, the Company was named in 8 new maritime actions in 2010 (not included in “Beginning claims”). The Company expects that more of the remaining 6,503 maritime actions will be activated, or permanently dismissed, as the Court’s review process continues. The number on this line reflects the number of previously inactive MARDOC claims that were newly activated in a given year.