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Variable Interest Entities (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
9 Months Ended |
|---|---|
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Sep. 30, 2014
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Cinergy Receivables [Member]
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| Variable Interest Entities [Line Items] | |
| Minimum equity balance required by Cinergy Receivables | $ 3 |
| Line of Credit Facility, Expiration Date | Nov. 01, 2016 |
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Cinergy Receivables [Member] | Variable Interest Entity, Primary Beneficiary [Member]
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| Variable Interest Entities [Line Items] | |
| Percent of proceeds received as cash | 75.00% |
| Percent of proceeds received as subordinated note | 25.00% |
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Duke Energy Carolinas [Member] | DERF [Member] | Variable Interest Entity, Primary Beneficiary [Member]
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| Variable Interest Entities [Line Items] | |
| Line of Credit Facility, Expiration Date | Oct. 01, 2016 |
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Duke Energy Progress [Member] | DEPR [Member] | Variable Interest Entity, Primary Beneficiary [Member]
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| Variable Interest Entities [Line Items] | |
| Line of Credit Facility, Expiration Date | Dec. 01, 2016 |
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Duke Energy Florida [Member] | DEFR [Member] | Variable Interest Entity, Primary Beneficiary [Member]
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| Variable Interest Entities [Line Items] | |
| Line of Credit Facility, Expiration Date | Mar. 01, 2017 |
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Duke Energy Ohio [Member] | Cinergy Receivables [Member]
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| Variable Interest Entities [Line Items] | |
| Fixed interest rate added to LIBOR to compute variable rate | 1.00% |
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Duke Energy Ohio [Member] | Other VIEs [Member] | Variable Interest Entity, Not Primary Beneficiary [Member]
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| Variable Interest Entities [Line Items] | |
| Ownership interest in OVEC | 9.00% |
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Duke Energy Indiana [Member] | Cinergy Receivables [Member]
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| Variable Interest Entities [Line Items] | |
| Fixed interest rate added to LIBOR to compute variable rate | 1.00% |