v2.4.0.8

Derivatives and Hedging (Location and Fair Value Amounts of Derivatives Reflected in the Condensed Consolidated Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | $ 570 | $ 461
Location and fair value amounts of derivatives (Liability) | 913 | 636
Current Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 388 | 214
Investments And Other Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 175 | 233
Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 583 | 322
Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 314 | 299
Designated As Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 16 | 27
Location and fair value amounts of derivatives (Liability) | 38 | 23
Designated As Hedging Instrument [Member] | Interest Rate Contracts [Member] | Investments And Other Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 16 | 27
Location and fair value amounts of derivatives (Liability) |  |
Designated As Hedging Instrument [Member] | Interest Rate Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) | 14 | 18
Designated As Hedging Instrument [Member] | Interest Rate Contracts [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) | 23 | 4
Designated As Hedging Instrument [Member] | Commodity Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) | 1 | 1
Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 554 | 434
Location and fair value amounts of derivatives (Liability) | 875 | 613
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) | 1 | 1
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) | 5 | 4
Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 36 | 201
Location and fair value amounts of derivatives (Liability) |  | 158
Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Assets, Assets Held For Sale [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 2 |
Location and fair value amounts of derivatives (Liability) | 2 |
Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Investments And Other Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 9 | 215
Location and fair value amounts of derivatives (Liability) |  | 131
Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Investments And Other Assets, Assets Held For Sale [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 9 |
Location and fair value amounts of derivatives (Liability) | 2 |
Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 4 | 13
Location and fair value amounts of derivatives (Liability) | 123 | 153
Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Liabilities, Assets Held For Sale [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 346 |
Location and fair value amounts of derivatives (Liability) | 445 |
Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 5
Location and fair value amounts of derivatives (Liability) | 37 | 166
Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Deferred Credits and Other Liabilities Assets Held For Sale [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 148 |
Location and fair value amounts of derivatives (Liability) | 260 |
Progress Energy [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 2 | 20
Location and fair value amounts of derivatives (Liability) | 144 | 204
Progress Energy [Member] | Current Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 15
Progress Energy [Member] | Investments And Other Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 5
Progress Energy [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 115 | 107
Progress Energy [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 29 | 93
Progress Energy [Member] | Designated As Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) |  | 5
Progress Energy [Member] | Designated As Hedging Instrument [Member] | Commodity Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) |  | 1
Progress Energy [Member] | Designated As Hedging Instrument [Member] | Commodity Contracts [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) |  | 4
Progress Energy [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 2 | 20
Location and fair value amounts of derivatives (Liability) | 144 | 199
Progress Energy [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 3
Location and fair value amounts of derivatives (Liability) |  | 2
Progress Energy [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Investments And Other Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 2
Location and fair value amounts of derivatives (Liability) |  | 1
Progress Energy [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 11
Location and fair value amounts of derivatives (Liability) | 115 | 105
Progress Energy [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 4
Location and fair value amounts of derivatives (Liability) | 29 | 91
Duke Energy Progress [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 3 | 6
Location and fair value amounts of derivatives (Liability) | 48 | 71
Duke Energy Progress [Member] | Current Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 2 | 3
Duke Energy Progress [Member] | Investments And Other Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 3
Duke Energy Progress [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 40 | 41
Duke Energy Progress [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 8 | 30
Duke Energy Progress [Member] | Designated As Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) | 1 | 1
Duke Energy Progress [Member] | Designated As Hedging Instrument [Member] | Commodity Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) | 1 | 1
Duke Energy Progress [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 3 | 6
Location and fair value amounts of derivatives (Liability) | 47 | 70
Duke Energy Progress [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Investments And Other Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 2
Location and fair value amounts of derivatives (Liability) |  | 1
Duke Energy Progress [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 2 | 2
Location and fair value amounts of derivatives (Liability) | 39 | 40
Duke Energy Progress [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 2
Location and fair value amounts of derivatives (Liability) | 8 | 29
Duke Energy Florida [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 2 | 14
Location and fair value amounts of derivatives (Liability) | 96 | 129
Duke Energy Florida [Member] | Current Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 12
Duke Energy Florida [Member] | Investments And Other Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 2
Duke Energy Florida [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 75 | 66
Duke Energy Florida [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 21 | 63
Duke Energy Florida [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 3
Location and fair value amounts of derivatives (Liability) |  | 2
Duke Energy Florida [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 9
Location and fair value amounts of derivatives (Liability) | 75 | 64
Duke Energy Florida [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 2
Location and fair value amounts of derivatives (Liability) | 21 | 63
Duke Energy Ohio [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 564 | 391
Location and fair value amounts of derivatives (Liability) | 778 | 390
Duke Energy Ohio [Member] | Current Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 381 | 186
Duke Energy Ohio [Member] | Investments And Other Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 183 | 205
Duke Energy Ohio [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 485 | 199
Duke Energy Ohio [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 293 | 186
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 564 | 391
Location and fair value amounts of derivatives (Liability) | 778 | 390
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) |  | 1
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  |
Location and fair value amounts of derivatives (Liability) | 4 | 4
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 2 | 186
Location and fair value amounts of derivatives (Liability) |  | 163
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Assets, Assets Held For Sale [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 |
Location and fair value amounts of derivatives (Liability) | 1 |
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Investments And Other Assets, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 202
Location and fair value amounts of derivatives (Liability) |  | 130
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Investments And Other Assets, Assets Held For Sale [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 9 |
Location and fair value amounts of derivatives (Liability) | 2 |
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 1
Location and fair value amounts of derivatives (Liability) |  | 36
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Current Liabilities, Assets Held For Sale [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 378 |
Location and fair value amounts of derivatives (Liability) | 484 |
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Deferred Credits And Other Liabilities, Other [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 2
Location and fair value amounts of derivatives (Liability) |  | 56
Duke Energy Ohio [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contracts [Member] | Deferred Credits and Other Liabilities Assets Held For Sale [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 174 |
Location and fair value amounts of derivatives (Liability) | $ 287 |

X
- Definition Fair value, before effects of master netting arrangements, of a financial asset or other 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. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226000-175313 + Details
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- Definition Fair value, before effects of master netting arrangements, of a 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. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226000-175313 + Details
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