v2.4.0.8

Acquisitions and Dispositions (Narrative) (Details) (USD $) | 9 Months Ended |  | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2014 Scenario Forecast [Member] Duke Energy Ohio [Member] Midwest Generation Business [Member] | Dec. 31, 2016 Scenario Forecast [Member] Duke Energy Progress [Member] NCEMPA Generating Assets [Member]
Significant Acquisitions and Disposals [Line Items] |  |  |  |
Payments to acquire businesses | $ 16,000,000 |  |  | $ 1,200,000,000
Disposal Group, Including Discontinued Operation, Consideration |  |  | $ 2,800,000,000 |

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- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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