Commitments And Contingencies (Schedule Of Activity Related To Asbestos Claims) (Details) (Asbestos Commitments And Contingencies [Member])	12 Months Ended
	Dec. 31, 2011 customers		Dec. 31, 2010 customers		Dec. 31, 2009 customers
Asbestos Commitments And Contingencies [Member]
Loss Contingencies [Line Items]
Beginning claims	64,839		66,341		74,872
New claims	3,748		5,032		3,664
Settlements	(1,117)	[1]	(1,127)	[1]	(1,024)	[1]
Dismissals	(11,059)		(6,363)		(11,171)
MARDOC claims	2,247	[2]	956	[2]
Ending claims	58,658		64,839		66,341
Total number of maritime claims					36,448
Maritime actions			8
Claims permanently dismissed	26,605
Remaining claims	6,648
Number of claims added to active status	3

[1] Includes Earl Haupt judgment.

[2] 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, 2011, pursuant to an ongoing review process initiated by the Court, 26,605 claims were permanently dismissed, 3,200 claims were restored to active status and 3 new filings in 2011 were added to active status (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") which had been administratively dismissed upon filing in 2010. The Company expects that more of the remaining 6,648 maritime actions will be activated, or permanently dismissed, as the Court's review process continues.