Income Taxes and Other Taxes (Tables)

6 Months Ended

Jun. 30, 2013

Income Tax Disclosure [Line Items]

Summary of Effective Tax Rates

	Three Months Ended June 30,					Six Months Ended June 30,
		2013		2012			2013		2012
Duke Energy		32.5	%	32.2	%		33.6	%	29.8	%
Duke Energy Carolinas		37.4	%	37.2	%		37.2	%	36.7	%
Progress Energy		59.9	%	38.2	%		36.7	%	36.1	%
Duke Energy Progress		39.6	%	30.3	%		38.7	%	31.4	%
Duke Energy Florida		38.0	%	38.8	%		39.8	%	37.5	%
Duke Energy Ohio		36.3	%	39.9	%		35.9	%	38.1	%
Duke Energy Indiana		37.5	%	34.4	%		37.5	%	45.7	%

Schedule of Excise Taxes

	Three Months Ended June 30,					Six Months Ended June 30,
(in millions)			2013		2012			2013		2012
Duke Energy		$	142	$	70		$	291	$	147
Duke Energy Carolinas			37		39			78		78
Progress Energy			73		77			141		146
Duke Energy Progress			27		26			55		52
Duke Energy Florida			46		51			86		94
Duke Energy Ohio			24		23			55		53
Duke Energy Indiana			8		8			17		16