2.4.0.8030101 - Disclosure - Organization and Basis of Presentation (Tables)truefalsefalse1false falsefalseFROM_Apr01_2013_TO_Jun30_2013http://www.sec.gov/CIK0001326160duration2013-04-01T00:00:002013-06-30T00:00:002false falsefalseFROM_Jan01_2013_TO_Jun30_2013http://www.sec.gov/CIK0001326160duration2013-01-01T00:00:002013-06-30T00:00:001true 3duk_OrganizationAndBasisOfPresentationLineItemsduk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Organization And Basis Of Presentation [Line Items]2false 4duk_ScheduleOfUnbilledRevenuesWithRestrictedReceivablesTableTextBlockduk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 5px"><td style="width: 20px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 420px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:420px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:440px;">(in millions)</td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:110px;">June 30, 2013</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:110px;">December 31, 2012</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:440px;">Duke Energy</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 920</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 920</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; text-align:left;border-color:#000000;min-width:440px;">Duke Energy Carolinas</td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 307</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 315</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:440px;">Progress Energy</td><td style="width: 60px; text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 217</td><td style="width: 12px; text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 187</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; text-align:left;border-color:#000000;min-width:440px;">Duke Energy Progress</td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 122</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 112</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:440px;">Duke Energy Florida</td><td style="width: 60px; text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 95</td><td style="width: 12px; text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 74</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; text-align:left;border-color:#000000;min-width:440px;">Duke Energy Ohio</td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 50</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 47</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:440px;">Duke Energy Indiana</td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 13</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 3</td></tr><tr style="height: 12px"><td style="width: 20px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 420px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:420px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr></table></div>falsefalsefalsenonnum:textBlockItemTypenaSchedule of unbilled revenues at the end of the reporting period.No definition available.false0Schedule Of Unbilled Revenues With Restricted Receivables3false 4duk_ScheduleOfNetIncomeAmountsAttributableToControllingInterestsTableTextBlockduk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 5px"><td style="width: 20px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 425px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:425px;"> </td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:445px;">(in millions)</td><td colspan="2" style="width: 105px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:105px;">Duke Energy</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:110px;">Progress Energy</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Three Months Ended June 30, 2013</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; text-align:left;border-color:#000000;min-width:445px;">Income from continuing operations, net of tax</td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 342</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> (13)</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Discontinued operations, net of tax</td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (3)</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (4)</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:445px;">Net income attributable to controlling interests</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 339</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> (17)</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Three Months Ended June 30, 2012</td><td style="width: 55px; border-top-style:solid;border-top-width:2px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:2px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; text-align:left;border-color:#000000;min-width:445px;">Income from continuing operations, net of tax</td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 445</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 67</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Discontinued operations, net of tax</td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (1)</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (4)</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:445px;">Net income attributable to controlling interests</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 444</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 63</td></tr><tr style="height: 12px"><td style="width: 20px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 425px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:425px;"> </td><td style="width: 55px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr></table></div>falsefalsefalse2falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 5px"><td style="width: 20px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 425px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:425px;"> </td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:445px;">(in millions)</td><td colspan="2" style="width: 105px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:105px;">Duke Energy</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:110px;">Progress Energy</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Six Months Ended June 30, 2013</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; text-align:left;border-color:#000000;min-width:445px;">Income from continuing operations, net of tax</td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 976</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 140</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Discontinued operations, net of tax</td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (3)</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (4)</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:445px;">Net income attributable to controlling interests</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 973</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 136</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Six Months Ended June 30, 2012</td><td style="width: 55px; border-top-style:solid;border-top-width:2px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:2px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; text-align:left;border-color:#000000;min-width:445px;">Income from continuing operations, net of tax</td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 738</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 206</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Discontinued operations, net of tax</td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 1</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 7</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:445px;">Net income attributable to controlling interests</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 739</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 213</td></tr><tr style="height: 12px"><td style="width: 20px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 425px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:425px;"> </td><td style="width: 55px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr></table></div>falsefalsefalsenonnum:textBlockItemTypenaSchedule of net income amounts attributable to controlling interests, including income from continuing operations and discontinued operations.No definition available.false0Schedule of Net Income Amounts Attributable to Controlling Interests4false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3false truefalseFROM_Apr01_2013_TO_Jun30_2013_dei_LegalEntityAxis_ProgressEnergyMemberhttp://www.sec.gov/CIK0001326160duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseProgress Energy [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiduk_ProgressEnergyMemberdei_LegalEntityAxisexplicitMembernanafalse0Progress Energy [Member]5true 3duk_OrganizationAndBasisOfPresentationLineItemsduk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Organization And Basis Of Presentation [Line Items]6false 4duk_ScheduleOfNetIncomeAmountsAttributableToControllingInterestsTableTextBlockduk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 5px"><td style="width: 20px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 425px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:425px;"> </td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:445px;">(in millions)</td><td colspan="2" style="width: 105px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:105px;">Duke Energy</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:110px;">Progress Energy</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Three Months Ended June 30, 2013</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; text-align:left;border-color:#000000;min-width:445px;">Income from continuing operations, net of tax</td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 342</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> (13)</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Discontinued operations, net of tax</td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (3)</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (4)</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:445px;">Net income attributable to controlling interests</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 339</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> (17)</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Three Months Ended June 30, 2012</td><td style="width: 55px; border-top-style:solid;border-top-width:2px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:2px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; text-align:left;border-color:#000000;min-width:445px;">Income from continuing operations, net of tax</td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 445</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 67</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Discontinued operations, net of tax</td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (1)</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (4)</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:445px;">Net income attributable to controlling interests</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 444</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 63</td></tr><tr style="height: 12px"><td style="width: 20px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 425px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:425px;"> </td><td style="width: 55px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr></table></div>falsefalsefalse2falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 5px"><td style="width: 20px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 425px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:425px;"> </td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:445px;">(in millions)</td><td colspan="2" style="width: 105px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:105px;">Duke Energy</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:110px;">Progress Energy</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Six Months Ended June 30, 2013</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; text-align:left;border-color:#000000;min-width:445px;">Income from continuing operations, net of tax</td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 976</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 140</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Discontinued operations, net of tax</td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (3)</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> (4)</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:445px;">Net income attributable to controlling interests</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 973</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 136</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Six Months Ended June 30, 2012</td><td style="width: 55px; border-top-style:solid;border-top-width:2px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:2px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; text-align:left;border-color:#000000;min-width:445px;">Income from continuing operations, net of tax</td><td style="width: 55px; text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 738</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 206</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:445px;">Discontinued operations, net of tax</td><td style="width: 55px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 1</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;"> 7</td></tr><tr style="height: 12px"><td colspan="2" style="width: 445px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:445px;">Net income attributable to controlling interests</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:55px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 739</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:50px;"> 213</td></tr><tr style="height: 12px"><td style="width: 20px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 425px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:425px;"> </td><td style="width: 55px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:55px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr></table></div>falsefalsefalsenonnum:textBlockItemTypenaSchedule of net income amounts attributable to controlling interests, including income from continuing operations and discontinued operations.No definition available.false0Schedule of Net Income Amounts Attributable to Controlling Interests7false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse5false truefalseFROM_Jan01_2013_TO_Jun30_2013_dei_LegalEntityAxis_DukeEnergyOhioMemberhttp://www.sec.gov/CIK0001326160duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseDuke Energy Ohio [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiduk_DukeEnergyOhioMemberdei_LegalEntityAxisexplicitMembernanafalse0Duke Energy Ohio [Member]8true 3duk_OrganizationAndBasisOfPresentationLineItemsduk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Organization And Basis Of Presentation [Line Items]9false 4duk_ScheduleOfUnbilledRevenuesTableTextBlockduk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 5px"><td style="width: 20px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 420px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:420px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:440px;">(in millions)</td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:110px;">June 30, 2013</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:110px;">December 31, 2012</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:440px;">Duke Energy Ohio</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;">71</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;">90</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:440px;">Duke Energy Indiana</td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:50px;">117</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:50px;">132</td></tr><tr style="height: 12px"><td style="width: 20px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 420px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:420px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr></table></div>falsefalsefalsenonnum:textBlockItemTypenaReceivables for unbilled revenues related to retail and wholesale accounts receivable sold to CRCNo definition available.false0Schedule of Unbilled Revenues Sold to CRC10false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse6false truefalseFROM_Jan01_2013_TO_Jun30_2013_dei_LegalEntityAxis_DukeEnergyIndianaMemberhttp://www.sec.gov/CIK0001326160duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseDuke Energy Indiana [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiduk_DukeEnergyIndianaMemberdei_LegalEntityAxisexplicitMembernanafalse0Duke Energy Indiana [Member]11true 3duk_OrganizationAndBasisOfPresentationLineItemsduk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Organization And Basis Of Presentation [Line Items]12false 4duk_ScheduleOfUnbilledRevenuesTableTextBlockduk_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 5px"><td style="width: 20px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 420px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:420px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:440px;">(in millions)</td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:110px;">June 30, 2013</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:110px;">December 31, 2012</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:440px;">Duke Energy Ohio</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;">71</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#CEE8E6;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:60px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#CEE8E6;border-color:#000000;min-width:50px;">90</td></tr><tr style="height: 12px"><td colspan="2" style="width: 440px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:440px;">Duke Energy Indiana</td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:50px;">117</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:50px;">132</td></tr><tr style="height: 12px"><td style="width: 20px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 420px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:420px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:60px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr></table></div>falsefalsefalsenonnum:textBlockItemTypenaReceivables for unbilled revenues related to retail and wholesale accounts receivable sold to CRCNo definition available.false0Schedule of Unbilled Revenues Sold to CRCfalseOrganization and Basis of Presentation (Tables)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.duke-energy.com/role/DisclosureOrganizationAndBasisOfPresentationTables212