v3.3.0.814

Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt)(Details) - USD ($) $ in Millions | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 2,536 | $ 2,807
Other Debt Obligations [Member] |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | 311 |
Duke Energy Carolinas [Member] |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 506 | 507
Duke Energy Carolinas [Member] | First Mortgage Bonds [Member] | 5.300% First Mortgage Bonds Maturing October 2015 [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.30% |
Current maturities of long-term debt | $ 500 |
Progress Energy Parent [Member] | Unsecured Debt [Member] | 5.625% Unsecured Debt Maturing January 2016 [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.625% |
Current maturities of long-term debt | $ 300 |
Duke Energy Progress [Member] |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 402 | 945
Duke Energy Progress [Member] | First Mortgage Bonds [Member] | 5.250% First Mortgage Bonds Maturing December 2015 [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.25% |
Current maturities of long-term debt | $ 400 |
Duke Energy Florida [Member] |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 563 | 562
Duke Energy Florida [Member] | First Mortgage Bonds [Member] | 0.650% First Mortgage Bonds Maturing November 2015 [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 0.65% |
Current maturities of long-term debt | $ 250 |
Duke Energy Florida [Member] | First Mortgage Bonds [Member] | 5.100% First Mortgage Bonds Maturing December 2015 [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.10% |
Current maturities of long-term debt | $ 300 |
Duke Energy Ohio [Member] |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | 56 | 157
Duke Energy Indiana [Member] |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 480 | $ 5
Duke Energy Indiana [Member] | Unsecured Debt [Member] | 6.05% Unsecured Debt Maturing June 2016 [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 6.05% |
Current maturities of long-term debt | $ 325 |
Duke Energy Indiana [Member] | First Mortgage Bonds [Member] | 0.636% First Mortgage Bonds Maturing July 2016 [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 0.636% |
Current maturities of long-term debt | $ 150 |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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