Acquisitions And Dispositions Of Businesses And Sales Of Other Assets (Tables)

12 Months Ended

Dec. 31, 2011

Acquisitions And Dispositions Of Businesses And Sales Of Other Assets [Abstract]

Schedule Of Sale Of Other Assets

(in millions)	Duke Energy		Duke Energy Carolinas		Duke Energy Ohio		Duke Energy Indiana
For the year ended December 31, 2011
Proceeds	$	12	$	2	$	7	$	1
Net pre-tax gains(a)		8		1		5		—
For the year ended December 31, 2010
Proceeds		160		8		13		—
Net pre-tax gains (losses)(b)		153		7		3		(2	)
For the year ended December 31, 2009
Proceeds		63		24		37		—
Net pre-tax gains (losses)(c)		36		24		12		(4	)

(a) These gains primarily relate to sales of emission allowances by USFE&G and Commercial Power.

(b) These gains primarily relate to the DukeNet gain as discussed above and sales of emission allowances by USFE&G and Commercial Power. The loss at Duke Energy Indiana relates primarily to the sale of     .

(c) These gains primarily relate to sales of emission allowances by USFE&G and Commercial Power. The loss at Duke Energy Indiana relates primarily to the sale of NOx.