Inventories (Details Textual) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Inventories (Textual) [Abstract]
Portion of in-process inventory related to contract	$ 18.5
787 [Member]
Inventories (Textual) [Abstract]
Portion of in-process inventory related to contract	907.2
A350 XWB [Member]
Inventories (Textual) [Abstract]
Portion of in-process inventory related to contract	324.7
A320neo [Member]
Inventories (Textual) [Abstract]
Portion of in-process inventory related to contract	33.4
PW 1000G [Member]
Inventories (Textual) [Abstract]
Portion of in-process inventory related to contract	366.5
Pre-production and excess-over-average [Member]
Inventories (Textual) [Abstract]
Portion of in-process inventory related to contract	$ 1,783.5	$ 1,561.7