Income Taxes and Other Taxes (Tables)

6 Months Ended

Jun. 30, 2011

Income Taxes and Other Taxes

Schedule of Unrecognized Tax Benefits

June 30, 2011	Duke Energy		Duke Energy Carolinas		Duke Energy Ohio		Duke Energy Indiana
	(in millions)
Unrecognized tax benefits(a)	$	358	$	238	$	26	$	19
Amount that if recognized, would affect the effective tax rate or regulatory liability(b)		121		113		—		—
Amount that if recognized, would be recorded as a component of discontinued operations		11		—		—		—
December 31, 2010
Unrecognized tax benefits(a)		342		217		29		21

(a) The Duke Registrants do not anticipate a significant increase or decrease in unrecognized tax benefits in the next twelve months.

(b) Duke Energy and Duke Energy Carolinas are unable to estimate the specific amounts that would affect the effective tax rate or regulatory liability.

Schedule of Effective Tax Rates

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
Duke Energy		30.4	%		(114.2	)%		30.8	%		60.1	%
Duke Energy Carolinas		35.5	%		30.0	%		35.3	%		33.9	%
Duke Energy Ohio		9.6	%		5.4	%		30.4	%		(4.3	)%
Duke Energy Indiana		29.3	%		36.1	%		32.3	%		34.9	%

Schedule of Excise Taxes

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
	(in millions)				(in millions)
Duke Energy Carolinas	$	37	$	38	$	73	$	76
Duke Energy Ohio		25		25		59		62
Duke Energy Indiana		7		7		15		14
Total Duke Energy	$	69	$	70	$	147	$	152