Business Segment Information (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Sales:
Sales	$ 2,001.4	$ 1,717.5	$ 3,897.3	$ 3,412.7
Intersegment Sales:
Intersegment Sales	29.8	16.9	53.3	32.3
Operating Income:
Operating Income	302.9	275.3	603.2	496.3
Actuation and Landing Systems [Member]
Sales:
Sales	736.7	608.1	1,421.0	1,221.2
Intersegment Sales:
Intersegment Sales	15.0	8.0	24.8	14.8
Operating Income:
Operating Income	76.5	60.5	163.0	129.9
Nacelles and Interior Systems [Member]
Sales:
Sales	688.8	577.4	1,345.2	1,133.2
Intersegment Sales:
Intersegment Sales	3.2	2.9	6.0	4.8
Operating Income:
Operating Income	178.2	151.4	335.5	270.2
Electronic Systems [Member]
Sales:
Sales	575.9	532.0	1,131.1	1,058.3
Intersegment Sales:
Intersegment Sales	11.6	6.0	22.5	12.7
Operating Income:
Operating Income	89.8	95.1	180.8	165.9
Reportable Segment [Member]
Operating Income:
Operating Income	344.5	307.0	679.3	566.0
Unallocated Amount to Segment [Member]
Operating Income:
ERP Costs	(4.9)	(4.0)	(8.5)	(8.1)
Corporate Elimination [Member]
Operating Income:
Corporate general and administrative expenses	$ (36.7)	$ (27.7)	$ (67.6)	$ (61.6)