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Segment Information (Details 2) (USD $)
In Millions
Sep. 30, 2011
Dec. 31, 2010
Goodwill and intangible assets by segment  
Goodwill and intangible assets$ 57.7$ 56.2
Composite Materials
  
Goodwill and intangible assets by segment  
Goodwill and intangible assets41.740.1
Engineered Products
  
Goodwill and intangible assets by segment  
Goodwill and intangible assets$ 16.0$ 16.1