Inventories (Details) (Textual) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Inventories (Textuals) [Abstract]
Portion of in-process inventory related to contract	$ 20.7
787 [Member]
Inventories (Textuals) [Abstract]
Portion of in-process inventory related to contract	641.4
A350 XWB [Member]
Inventories (Textuals) [Abstract]
Portion of in-process inventory related to contract	265.9
PW 1000G [Member]
Inventories (Textuals) [Abstract]
Portion of in-process inventory related to contract	225.1
Pre-production and excess-over-average [Member]
Inventories (Textuals) [Abstract]
Portion of in-process inventory related to contract	$ 1,309.8	$ 1,154.2