Borrowing limitation for transferred receivables.

No definition available.

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- Definition

Minimum equity Balance required by Cinergy Receivables

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

Sale of Receivables, Fixed Rate Used in Calculation

+ References

No definition available.

+ Details

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- Definition

Secured Credit Facility Of Vie

+ References

No definition available.

+ Details

Name:	duk_SecuredCreditFacilityOfVie
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Subordinated Retained Interest Limitation Of The Total Proceeds

+ References

No definition available.

+ Details

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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 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: 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=6584090&loc=d3e28878-108400

+ Details

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Balance Type:	credit
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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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- Definition

Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	credit
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- Details

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Balance Type:	na
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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 5A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=SL6759159-111685

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Variable Interest Entities (Narrative) (Details) (USD $) In Millions, unless otherwise specified		9 Months Ended		9 Months Ended					9 Months Ended			9 Months Ended			9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 Minimum [Member]	Dec. 31, 2010 DukeNet And Alinda Capital Partners LLC Ownership In The New Joint Venture [Member]	Sep. 30, 2013 Cinergy Receivables [Member]	Sep. 30, 2013 Cinergy Receivables [Member] Minimum [Member]	Sep. 30, 2013 Cinergy Receivables [Member] Maximum [Member]	Sep. 30, 2013 Other VIEs [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2012 FPC Capital I Trust [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 30, 2013 Duke Energy Carolinas [Member] DERF [Member] Variable Interest Entity, Primary Beneficiary [Member]	Sep. 30, 2013 Duke Energy Progress [Member]	Sep. 30, 2013 Duke Energy Ohio [Member]	Sep. 30, 2013 Duke Energy Ohio [Member] Cinergy Receivables [Member]	Sep. 30, 2013 Duke Energy Indiana [Member]	Jan. 12, 2012 Duke Energy Indiana [Member]	Sep. 30, 2013 Duke Energy Indiana [Member] Cinergy Receivables [Member]
Variable Interest Entity [Line Items]
Borrowing limitation for CRC				75.00%
Minimum Equity Balance required by Cinergy Receivables				$ 3
Subordinated retained interest limitation of the total proceeds					10.00%	20.00%
Secured credit facility of variable interest entities									400
Fixed rate used when selling receivables												1.00%			1.00%
Equity ownership interest rate														62.50%
Senior secured credit facility			150
Line of credit facility, expiration date		Nov. 01, 2017		Nov. 01, 2013					Oct. 01, 2016
Ownership interest in OVEC							9.00%
Debt instrument, face amount	$ 3,771							$ 300		$ 548	$ 450		$ 500