v3.3.0.814

Variable Interest Entities (Schedule of Accounts Receivable Securitizations) (Details) | Sep. 30, 2015 USD ($)
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Variable Interest Entities [Line Items] |
Debt Instrument, Face Amount | $ 1,700,000,000
Duke Energy Carolinas [Member] |
Variable Interest Entities [Line Items] |
Debt Instrument, Face Amount | 500,000,000
Duke Energy Progress [Member] |
Variable Interest Entities [Line Items] |
Debt Instrument, Face Amount | 1,200,000,000
DERF [Member] | Duke Energy Carolinas [Member] | Variable Interest Entity, Primary Beneficiary [Member] |
Variable Interest Entities [Line Items] |
Debt Instrument, Face Amount | 400,000,000
DEPR [Member] | Duke Energy Progress [Member] | Variable Interest Entity, Primary Beneficiary [Member] |
Variable Interest Entities [Line Items] |
Debt Instrument, Face Amount | 300,000,000
DEFR [Member] | Duke Energy Florida [Member] | Variable Interest Entity, Primary Beneficiary [Member] |
Variable Interest Entities [Line Items] |
Debt Instrument, Face Amount | $ 225,000,000

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
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