Acquisition Integration Charges (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Acquisition Integration Charges
Total integration charges before income taxes	$ 3	$ 3
After-tax integration charges	2	2
Per common share	$ 0.01	$ 0.01
Electrical Americas [Member]
Acquisition Integration Charges
Total integration charges before income taxes	1	3
Electrical Rest of World [Member]
Acquisition Integration Charges
Total integration charges before income taxes	1	0
Hydraulics [Member]
Acquisition Integration Charges
Total integration charges before income taxes	$ 1	$ 0