Business Segment Information (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Sales By Product Categories
Total Sales	$ 8,074.9	$ 6,966.9	$ 6,685.6
Engine Products and Services [Member]
Sales By Product Categories
Total Sales	2,801.6	2,444.0	2,438.9
Landing System Products and Services [Member]
Sales By Product Categories
Total Sales	1,682.1	1,497.3	1,471.1
Electrical And Optical Products And Services [Member]
Sales By Product Categories
Total Sales	1,669.3	1,550.6	1,288.7
Airframe Products And Services [Member]
Sales By Product Categories
Total Sales	1,193.2	838.9	856.9
Safety Products And Services [Member]
Sales By Product Categories
Total Sales	583.0	505.0	509.9
Other products And Services [Member]
Sales By Product Categories
Total Sales	$ 145.7	$ 131.1	$ 120.1