v3.3.0.814

Derivatives and Hedging (Derivative Instruments with Credit-Risk Related Contingent Features and Cash Collateral) (Details) - USD ($) $ in Millions | Sep. 30, 2015 | Dec. 31, 2014
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Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features |  |
Aggregate fair value amounts of derivative instruments in a net liability position | $ 316 | $ 845
Fair value of collateral already posted | 20 | 209
Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered | 296 | 407
Information Regarding Cash Collateral Under Master Netting Arrangements |  |
Amounts offset against net derivative positions on the Condensed Consolidated Balance Sheets, payables | 20 | 145
Amounts not offset against net derivative positions |  | 64
Duke Energy Carolinas [Member] |  |
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features |  |
Aggregate fair value amounts of derivative instruments in a net liability position | 33 | 19
Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered | 33 | 19
Progress Energy [Member] |  |
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features |  |
Aggregate fair value amounts of derivative instruments in a net liability position | 301 | 370
Fair value of collateral already posted | 20 | 23
Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered | 281 | 347
Information Regarding Cash Collateral Under Master Netting Arrangements |  |
Amounts offset against net derivative positions on the Condensed Consolidated Balance Sheets, payables | 20 | 23
Duke Energy Progress [Member] |  |
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features |  |
Aggregate fair value amounts of derivative instruments in a net liability position | 94 | 131
Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered | 94 | 131
Duke Energy Florida [Member] |  |
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features |  |
Aggregate fair value amounts of derivative instruments in a net liability position | 207 | 239
Fair value of collateral already posted | 20 | 23
Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered | 187 | 216
Information Regarding Cash Collateral Under Master Netting Arrangements |  |
Amounts offset against net derivative positions on the Condensed Consolidated Balance Sheets, payables | $ 20 | 23
Duke Energy Ohio [Member] |  |
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features |  |
Aggregate fair value amounts of derivative instruments in a net liability position |  | 456
Fair value of collateral already posted |  | 186
Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered |  | 41
Information Regarding Cash Collateral Under Master Netting Arrangements |  |
Amounts offset against net derivative positions on the Condensed Consolidated Balance Sheets, payables |  | 122
Amounts not offset against net derivative positions |  | $ 64

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- Definition The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624258-113959 + Details
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624258-113959 + Details
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- Definition Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226016-175313 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41678-113959 + Details
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- Definition Fair value, after effects of master netting arrangements, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset offset against the right to receive collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41678-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226016-175313 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624258-113959 + Details
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