Acquisition Integration Charges (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Acquisition Integration Charges
Total integration charges before income taxes	$ 14	$ 40	$ 82
After-tax integration charges	10	27	54
Per common share	$ 0.03	$ 0.08	$ 0.16
Electrical Americas [Member]
Acquisition Integration Charges
Total integration charges before income taxes	8	2	4
Electrical Rest of World [Member]
Acquisition Integration Charges
Total integration charges before income taxes	2	33	60
Hydraulics [Member]
Acquisition Integration Charges
Total integration charges before income taxes	4	1	3
Aerospace [Member]
Acquisition Integration Charges
Total integration charges before income taxes	0	4	12
Automotive [Member]
Acquisition Integration Charges
Total integration charges before income taxes	0	0	1
All Segments [Member]
Acquisition Integration Charges
Total integration charges before income taxes	14	40	80
Corporate [Member]
Acquisition Integration Charges
Total integration charges before income taxes	$ 0	$ 0	$ 2