v3.3.0.814

Business Segments (Business Segment Data) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | $ 6,483 | $ 6,395 | $ 18,137 | $ 18,366 |
Segment income | 937 | 888 | 2,310 | 2,356 |
Add back noncontrolling interests | 3 | 3 | 10 | 11 |
(Loss) Income From Discontinued Operations, net of tax | (5) | 378 | 29 | (578) |
Net income (loss) attributable to parent | 932 | 1,274 | 2,339 | 1,786 |
Net income (loss) | 935 | 1,269 | 2,349 | 1,789 |
Segment assets | 121,033 |  | 121,033 |  | $ 120,709
Impairment charges | 111 | 1 | 111 | 81 |
Charge for settlement agreement, net of tax |  |  | 53 |  |
Regulated Utilities [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 6,138 | 5,975 | 17,062 | 17,041 |
International Energy [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 281 | 366 | 841 | 1,111 |
Commercial Portfolio [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 66 | 50 | 214 | 195 |
State Tax Charge |  |  | 41 |  |
Other [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | (2) | 4 | 20 | 19 |
Total Reportable Segments [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 6,485 | 6,391 | 18,117 | 18,347 |
Operating Segments [Member] | Regulated Utilities [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 6,147 | 5,986 | 17,090 | 17,074 |
Segment income | 905 | 920 | 2,311 | 2,346 |
Segment assets | 110,520 |  | 110,520 |  |
Operating Segments [Member] | International Energy [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 281 | 366 | 841 | 1,111 |
Segment income | 69 | 80 | 157 | 356 |
Segment assets | 3,730 |  | 3,730 |  |
Operating Segments [Member] | Commercial Portfolio [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 66 | 50 | 214 | 195 |
Segment income | (3) | (17) | (35) | (70) |
Segment assets | 3,841 |  | 3,841 |  |
Operating Segments [Member] | Total Reportable Segments [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 6,494 | 6,402 | 18,145 | 18,380 |
Segment income | 971 | 983 | 2,433 | 2,632 |
Segment assets | 118,091 |  | 118,091 |  |
Intersegment Eliminations [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | (28) | (32) | (86) | (93) |
Segment income |  | (3) | (4) | (7) |
Segment assets | 185 |  | 185 |  |
Intersegment Eliminations [Member] | Regulated Utilities [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | (9) | (11) | (28) | (33) |
Intersegment Eliminations [Member] | Other [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | (19) | (21) | (58) | (60) |
Intersegment Eliminations [Member] | Total Reportable Segments [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | (9) | (11) | (28) | (33) |
Corporate, Non-Segment [Member] | Other [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 17 | 25 | 78 | 79 |
Segment income | (34) | (92) | (119) | (269) |
Segment assets | 2,757 |  | 2,757 |  |
Costs to achieve Progress Energy merger | 15 | 35 | 42 | 107 |
Other VIEs [Member] | Commercial Portfolio [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Impairment charges |  |  |  | 94 |
Duke Energy Ohio [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 462 | 446 | 1,453 | 1,433 |
Segment income | 34 | 26 | 106 | 39 |
(Loss) Income From Discontinued Operations, net of tax | (2) | 413 | 23 | (597) |
Net income (loss) attributable to parent | 32 | 439 | 129 | (558) |
Segment assets | 7,083 |  | 7,083 |  | 9,999
Impairment charges |  |  |  | 94 |
Charge for settlement agreement, net of tax |  |  | 53 |  |
Duke Energy Ohio [Member] | Regulated Utilities [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues |  | 440 |  | 1,416 |
Duke Energy Ohio [Member] | Commercial Portfolio [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues |  | 6 |  | 17 |
Duke Energy Ohio [Member] | Total Reportable Segments [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues |  | 446 |  | 1,433 |
Duke Energy Ohio [Member] | Operating Segments [Member] | Regulated Utilities [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 456 | 441 | 1,424 | 1,417 |
Segment income | 46 | 43 | 135 | 151 |
Segment assets | 6,961 |  | 6,961 |  |
Duke Energy Ohio [Member] | Operating Segments [Member] | Commercial Portfolio [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues |  | 6 | 14 | 17 |
Segment income |  | (13) | (9) | (101) |
Duke Energy Ohio [Member] | Operating Segments [Member] | Total Reportable Segments [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues |  | 447 | 1,438 | 1,434 |
Segment income |  | 30 | 126 | 50 |
Duke Energy Ohio [Member] | Intersegment Eliminations [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues |  | (1) |  | (1) |
Segment assets | (4) |  | (4) |  |
Duke Energy Ohio [Member] | Intersegment Eliminations [Member] | Regulated Utilities [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues |  | (1) |  | (1) |
Duke Energy Ohio [Member] | Intersegment Eliminations [Member] | Total Reportable Segments [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues |  | (1) |  | (1) |
Duke Energy Ohio [Member] | Corporate, Non-Segment [Member] | Other [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Operating revenues | 6 |  | 15 |  |
Segment income | (12) | $ (4) | (20) | (11) |
Segment assets | 126 |  | 126 |  |
Duke Energy Ohio [Member] | Other VIEs [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Impairment charges |  |  |  | 94 | $ 94
Duke Energy Ohio [Member] | Other VIEs [Member] | Commercial Portfolio [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Impairment charges |  |  |  | $ 94 |
Edwardsport Igcc Plant [Member] | Regulated Utilities [Member] |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |
Impairment charges | $ 56 |  | $ 56 |  |

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