v2.4.0.6

Income Taxes And Other Taxes (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2013
Income Tax Disclosure [Line Items] |
Summary Of Effective Tax Rates |
|  |  | Three Months Ended March 31,
|  | 2013 |  | 2012 |
Duke Energy |  | 34.2 | % | 25.8 | %
Duke Energy Carolinas |  | 37.1 | % | 36.3 | %
Progress Energy |  | 39.6 | % | 35.1 | %
Duke Energy Progress |  | 38.1 | % | 32.0 | %
Duke Energy Florida |  | 39.1 | % | 36.6 | %
Duke Energy Ohio |  | 37.1 | % | 37.0 | %
Duke Energy Indiana |  | 37.5 | % | 41.0 | %
Schedule Of Excise Taxes |
|  |  | Three Months Ended March 31,
(in millions) |  |  | 2013 |  | 2012
Duke Energy |  | $ | 149 | $ | 77
Duke Energy Carolinas |  |  | 42 |  | 39
Progress Energy |  |  | 67 |  | 69
Duke Energy Progress |  |  | 28 |  | 26
Duke Energy Florida |  |  | 39 |  | 43
Duke Energy Ohio |  |  | 31 |  | 30
Duke Energy Indiana |  |  | 9 |  | 8

X
- Details
Name: | duk_IncomeTaxDisclosureLineItems
Namespace Prefix: | duk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Excise Taxes + References No definition available. + Details
Name: | duk_ScheduleOfExciseTaxesTableTextBlock
Namespace Prefix: | duk_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
Name: | us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration