Percent of proceeds from accounts receivable securitization received as cash.

No definition available.

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- Definition

Percent of proceeds from accounts receivable securitization received as subordinated note.

+ References

No definition available.

+ Details

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- Definition

Minimum equity Balance required by Cinergy Receivables

+ References

No definition available.

+ Details

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ 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

+ Details

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- Details

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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

+ Details

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Data Type:	num:percentItemType
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- Details

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- Details

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- Details

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- Details

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Variable Interest Entities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Variable Interest Entity [Line Items]
Impairment charges	$ 81us-gaap_AssetImpairmentCharges	$ 399us-gaap_AssetImpairmentCharges	$ 666us-gaap_AssetImpairmentCharges
Cinergy Receivables [Member]
Variable Interest Entity [Line Items]
Minimum Equity Balance required by Cinergy Receivables	3
Line of credit facility, expiration date	Nov. 01, 2016
Cinergy Receivables [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Percent of proceeds received as cash	75.00%
Percent of proceeds received as subordinated note	25.00%
Duke Energy Carolinas [Member]
Variable Interest Entity [Line Items]
Impairment charges	3		31
Duke Energy Carolinas [Member] \| DERF [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Line of credit facility, expiration date	Oct. 01, 2016
Duke Energy Progress [Member]
Variable Interest Entity [Line Items]
Impairment charges	(18)	22	54
Duke Energy Progress [Member] \| DEPR [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Line of credit facility, expiration date	Dec. 01, 2016
Duke Energy Florida [Member]
Variable Interest Entity [Line Items]
Impairment charges	2	358	146
Duke Energy Ohio [Member]
Variable Interest Entity [Line Items]
Impairment charges	94	5	2
Duke Energy Ohio [Member] \| Cinergy Receivables [Member]
Variable Interest Entity [Line Items]
Fixed rate used when selling receivables	1.00%
Duke Energy Ohio [Member] \| Other VIEs [Member]
Variable Interest Entity [Line Items]
Impairment charges	94
Duke Energy Ohio [Member] \| Other VIEs [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Ownership interest in OVEC	9.00%
Duke Energy Indiana [Member]
Variable Interest Entity [Line Items]
Impairment charges	$ 0	$ 0	$ 579
Duke Energy Indiana [Member] \| Cinergy Receivables [Member]
Variable Interest Entity [Line Items]
Fixed rate used when selling receivables	1.00%