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Postretirement Benefits (Details Textual) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
U.S. Benefit Plan [Member]
   
Postretirement Benefits (Textual) [Abstract]    
Contribution to defined benefit plan $ 9.2 $ 1.6
Required contribution to defined benefit plan 9.2  
Non-U.S. Benefit Plan [Member]
   
Postretirement Benefits (Textual) [Abstract]    
Contribution to defined benefit plan 1.4 0.9
Required contribution to defined benefit plan $ 1.6