Face (par) amount of debt instrument at time of issuance.

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The amount for notes payable (written promise to pay), due to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph k

-Subparagraph 1

-Article 4

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-Number 210

-Section 02

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-Subparagraph (SX 210.5-02.19(a)(5))

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

The net cash inflow or outflow in aggregate debt due to repayments and proceeds from additional borrowings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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- Definition

Value transferred out of real estate owned (REO) in noncash transactions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

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Related Party Transactions (Narrative) (Details) (USD $)	12 Months Ended	0 Months Ended	12 Months Ended
	Dec. 31, 2014	Jan. 12, 2012	Dec. 31, 2012	Dec. 31, 2013	Apr. 30, 2014
Related Party Transaction [Line Items]
Debt instrument, face amount	$ 2,922,000,000us-gaap_DebtInstrumentFaceAmount			$ 4,023,000,000us-gaap_DebtInstrumentFaceAmount
DECAM [Member]
Related Party Transaction [Line Items]
Proceeds from Issuance of Debt	400,000,000
Progress Energy [Member]
Related Party Transaction [Line Items]
Intercompany loan payable	835,000,000			1,213,000,000
Duke Energy Progress [Member]
Related Party Transaction [Line Items]
Intercompany loan payable				462,000,000
Debt instrument, face amount	1,350,000,000			800,000,000
Duke Energy Florida [Member]
Related Party Transaction [Line Items]
Intercompany loan payable	84,000,000			181,000,000
Debt instrument, face amount	225,000,000
Duke Energy Ohio [Member]
Related Party Transaction [Line Items]
Transfer of Vermillion Generating Station		28,000,000	28,000,000
Intercompany loan payable	491,000,000			43,000,000
Debt instrument, face amount				450,000,000
Duke Energy Ohio [Member] \| DECAM [Member]
Related Party Transaction [Line Items]
Intercompany loan payable	459,000,000			43,000,000
Duke Energy Ohio [Member] \| Vermillion Generation Station [Member]
Related Party Transaction [Line Items]
Transfer of Vermillion Generating Station			26,000,000
Parent Company [Member]
Related Party Transaction [Line Items]
Debt instrument, face amount	1,000,000,000			1,400,000,000
Duke Energy Indiana [Member]
Related Party Transaction [Line Items]
Transfer of Vermillion Generating Station		26,000,000	26,000,000
Intercompany loan payable	71,000,000
Debt instrument, face amount				500,000,000
Duke Energy Indiana [Member] \| Vermillion Generation Station [Member]
Related Party Transaction [Line Items]
Transfer of Vermillion Generating Station			28,000,000
Unsecured Debt [Member] \| Duke Energy Ohio [Member]
Related Party Transaction [Line Items]
Proceeds from (Repayments of) Debt	(402,000,000)
Unsecured Debt [Member] \| Parent Company [Member]
Related Party Transaction [Line Items]
Debt instrument, face amount					$ 1,000,000,000