Commitments And Contingencies (Schedule Of Gross Settlement And Defense Costs) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Loss Contingencies [Line Items]
Pre-tax cash payments	$ (79,277,000)		$ (66,731,000)		$ (55,827,000)
Asbestos Commitments And Contingencies [Member]
Loss Contingencies [Line Items]
Settlement / indemnity costs incurred	50,200,000	[1]	52,700,000	[1]	58,300,000	[1]
Defense costs incurred	55,300,000	[1]	53,900,000	[1]	51,800,000	[1]
Total costs incurred	105,500,000		106,600,000		110,100,000
Settlement / indemnity payments	55,000,000		46,900,000		57,300,000
Defense payments	56,500,000		54,400,000		52,200,000
Insurance Receipts	(32,200,000)	[2]	(34,600,000)	[2]	(53,700,000)	[2]
Pre-tax cash payments	$ 79,300,000	[2]	$ 66,700,000	[2]	$ 55,800,000	[2]

[1] Before insurance recoveries and tax effects.

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