Acquisition Integration and Restructuring Charges (Details) (USD $) In Millions, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Acquisition Integration Charges
Total integration charges before income taxes	$ 4	$ 7	$ 9	$ 25
After-tax integration charges	2	4	6	16
Per common share	$ 0.01	$ 0.01	$ 0.02	$ 0.05
Electrical Americas [Member]
Acquisition Integration Charges
Total integration charges before income taxes	3	0	7	2
Electrical Rest of World [Member]
Acquisition Integration Charges
Total integration charges before income taxes	0	6	1	20
Hydraulics [Member]
Acquisition Integration Charges
Total integration charges before income taxes	1	0	1	0
Aerospace [Member]
Acquisition Integration Charges
Total integration charges before income taxes	$ 0	$ 1	$ 0	$ 3