Borrowing limitation.

No definition available.

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- Definition

Proceeds Received For Sale Of Receivables Portion Received As Note Payable

+ References

No definition available.

+ Details

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- Definition

Receivables To Maintain Minimum equity Balance

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- 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

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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

Unfavorable Hypothetical Effect On The Fair Value Of Retained Interests

+ References

No definition available.

+ Details

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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 Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a (1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: 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

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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Variable Interest Entities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended						3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Aug. 31, 2013 DERF [Member]	Dec. 31, 2010 Duke Energy Corp [Member]	Dec. 31, 2010 DukeNet And Alinda Capital Partners LLC Ownership In The New Joint Venture [Member]	Dec. 31, 2010 DukeNet [Member]	Mar. 31, 2012 Minimum [Member]	Mar. 31, 2012 Maximum [Member]
Proceeds received for sale of receivables, portion received as note payable		25.00%
Borrowing limitation	75.00%
Receivables to maintain minimum equity balance	$ 3
Subordinated retained interest limitation of the total proceeds	25.00%
Secured credit facility of VIEs			300
Assumptions used in an unfavorable effect on the fair value of retained interests							10.00%	20.00%
Fixed rate used when selling receivables	1.00%
Equity ownership interest rate				50.00%	50.00%
Senior secured credit facility						$ 150