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Inventories (Details Textual) (USD $)
In Millions
Sep. 30, 2011
Dec. 31, 2010
Inventories (Textual) [Abstract]  
Portion of in-process inventory related to contract$ 17.8 
787 [Member]
  
Inventories (Textual) [Abstract]  
Portion of in-process inventory related to contract700.4 
A350 XWB [Member]
  
Inventories (Textual) [Abstract]  
Portion of in-process inventory related to contract284.8 
PW 1000G [Member]
  
Inventories (Textual) [Abstract]  
Portion of in-process inventory related to contract267.4 
Pre-production and excess-over-average [Member]
  
Inventories (Textual) [Abstract]  
Portion of in-process inventory related to contract$ 1,434.3$ 1,154.2