Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2011
Potential revision on future environmental remediation costs before tax	$ 16.8
Bergheim, Germany Site [Member]
Environmental liability related to the closure and post-closure activities	70.00%
Pledged land and housing facilities	$ 6.0