v2.4.0.8

Business Segments (Business Segment Data) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | $ 6,395 |  | $ 6,217 |  | $ 18,366 |  | $ 17,132 |  |
Segment income | 888 |  | 942 |  | 2,356 |  | 1,890 |  |
Add back noncontrolling interests component | 3 |  | 4 |  | 11 |  | 12 |  |
Income (Loss) From Discontinued Operations, net of tax | 378 |  | 62 |  | (578) |  | 82 |  |
Net Income (Loss) Attributable to Parent | 1,274 |  | 1,004 |  | 1,786 |  | 1,977 |  |
Net income (loss) | 1,269 |  | 1,008 |  | 1,789 |  | 1,984 |  |
Segment assets | 119,656 |  |  |  | 119,656 |  |  |  | 114,779
Impairment charges | 1 |  | 2 |  | 81 |  | 388 |  |
Regulated Utilities [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 5,975 |  | 5,768 | [1] | 17,041 |  | 15,731 | [1],[2],[3],[4] |
Segment income | 920 |  | 923 | [1] | 2,346 |  | 1,932 | [1],[2],[3],[4],[5] |
International Energy [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 366 |  | 370 |  | 1,111 |  | 1,168 |  |
Segment income | 80 |  | 116 |  | 356 |  | 300 |  |
Commercial Power [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 50 |  | 56 |  | 195 |  | 184 |  |
Segment income | (17) |  | (28) |  | (70) | [6] | (54) |  |
Other [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 4 |  | 23 |  | 19 |  | 49 |  |
Segment income | (92) | [7] | (64) | [7] | (269) | [7] | (278) | [7] |
Total Reportable Segments [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 6,391 |  | 6,194 |  | 18,347 |  | 17,083 |  |
Segment income | 983 |  | 1,011 |  | 2,632 |  | 2,178 |  |
Operating Segments [Member] | Regulated Utilities [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 5,986 |  | 5,786 |  | 17,074 |  | 15,766 |  |
Segment assets | 105,172 |  |  |  | 105,172 |  |  |  |
Operating Segments [Member] | International Energy [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 366 |  | 370 |  | 1,111 |  | 1,168 |  |
Segment assets | 5,159 |  |  |  | 5,159 |  |  |  |
Operating Segments [Member] | Commercial Power [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 50 |  | 58 |  | 195 |  | 189 |  |
Segment assets | 6,196 |  |  |  | 6,196 |  |  |  |
Operating Segments [Member] | Total Reportable Segments [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 6,402 |  | 6,214 |  | 18,380 |  | 17,123 |  |
Segment assets | 116,527 |  |  |  | 116,527 |  |  |  |
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | (32) |  | (44) |  | (93) |  | (104) |  |
Segment income | (3) |  | (5) |  | (7) |  | (10) |  |
Segment assets | (185) |  |  |  | (185) |  |  |  |
Intersegment Eliminations [Member] | Regulated Utilities [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | (11) |  | (18) |  | (33) |  | (35) |  |
Intersegment Eliminations [Member] | Commercial Power [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues |  |  | (2) |  |  |  | (5) |  |
Intersegment Eliminations [Member] | Other [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | (21) |  | (24) |  | (60) |  | (64) |  |
Intersegment Eliminations [Member] | Total Reportable Segments [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | (11) |  | (20) |  | (33) |  | (40) |  |
Corporate, Non-Segment [Member] | Other [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 25 |  | 47 |  | 79 |  | 113 |  |
Segment assets | 2,944 |  |  |  | 2,944 |  |  |  |
Other VIEs [Member] | Commercial Power [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Impairment charges |  |  |  |  | 94 |  |  |  |
Duke Energy Ohio [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 446 |  | 438 |  | 1,433 |  | 1,349 |  |
Segment income | 26 |  | 24 |  | 39 |  | 57 |  |
Income (Loss) From Discontinued Operations, net of tax | 413 |  | 35 |  | (597) |  | 39 |  |
Net Income (Loss) Attributable to Parent | 439 |  | 59 |  | (558) |  | 96 |  |
Segment assets | 10,072 |  |  |  | 10,072 |  |  |  | 10,763
Impairment charges |  |  |  |  | 94 |  |  |  |
Duke Energy Ohio [Member] | Regulated Utilities [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 440 |  | 421 |  | 1,416 |  | 1,317 |  |
Segment income | 43 |  | 42 |  | 151 |  | 122 |  |
Duke Energy Ohio [Member] | Commercial Power [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 6 |  | 17 |  | 17 |  | 32 |  |
Segment income | (13) |  | (13) |  | (101) | [8] | (51) |  |
Duke Energy Ohio [Member] | Other [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Segment income | (4) |  | (5) |  | (11) |  | (14) |  |
Duke Energy Ohio [Member] | Total Reportable Segments [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 446 |  | 438 |  | 1,433 |  | 1,349 |  |
Segment income | 30 |  | 29 |  | 50 |  | 71 |  |
Duke Energy Ohio [Member] | Operating Segments [Member] | Regulated Utilities [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 441 |  | 421 |  | 1,417 |  | 1,317 |  |
Segment assets | 7,297 |  |  |  | 7,297 |  |  |  |
Duke Energy Ohio [Member] | Operating Segments [Member] | Commercial Power [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 6 |  | 17 |  | 17 |  | 32 |  |
Segment assets | 3,266 |  |  |  | 3,266 |  |  |  |
Duke Energy Ohio [Member] | Operating Segments [Member] | Total Reportable Segments [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | 447 |  | 438 |  | 1,434 |  | 1,349 |  |
Segment assets | 10,563 |  |  |  | 10,563 |  |  |  |
Duke Energy Ohio [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Operating revenues | (1) |  |  |  | (1) |  |  |  |
Segment assets | (622) |  |  |  | (622) |  |  |  |
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] |  |  |  |  |  |  |  |  |
Segment assets | 131 |  |  |  | 131 |  |  |  |
Duke Energy Ohio [Member] | Other VIEs [Member] | Commercial Power [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |  |  |
Impairment charges |  |  |  |  | $ 94 |  |  |  |
[1] | In September 2013, Duke Energy Carolinas implemented revised customer rates approved by the NCUC and the PSCSC. These rate increases impact Regulated Utilities.
[2] | In June 2013, NCUC approved a Duke Energy Progress settlement agreement that included an increase in rates in the first year beginning in June 2013. This rate increase impacts Regulated Utilities.
[3] | Regulated Utilities recorded an impairment charge related to Duke Energy Florida's Crystal River Unit 3. See Note 4 for additional information.
[4] | In May 2013, the PUCO approved a Duke Energy Ohio settlement agreement that provides for a net annual increase in electric distribution revenues beginning in May 2013. This rate increase impacts Regulated Utilities.
[5] | Regulated Utilities recorded an impairment charge related to the letter Duke Energy Progress filed with the NRC requesting the NRC to suspend its review activities associated with the combined construction and operating license (COL) at Harris site. Regulated Utilities also recorded an impairment charge related to the write-off of the wholesale portion of the Levy investments at Duke Energy Florida in accordance with the 2013 Settlement. See Note 4 for additional information.
[6] | Commercial Power recorded a pretax impairment charge of $94 million related to reducing the carrying value of OVEC to zero. See Note 13 for additional information.
[7] | Other includes costs to achieve the Progress Energy merger.
[8] | Duke Energy Ohio recorded a pretax impairment charge of $94 million related to reducing the carrying value of OVEC to zero. See Note 13 for additional information.

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