2.4.0.8012001 - Disclosure - Subsequent Eventstruefalsefalse1false falsefalseFROM_Jan01_2013_TO_Jun30_2013http://www.sec.gov/CIK0001326160duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_SubsequentEventsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Subsequent Events [Abstract]2false 2us-gaap_SubsequentEventsTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse0019. SUBSEQUENT EVENTSFor information on subsequent events related to regulatory matters, commitments and contingencies, debt and credit facilities, and income taxes, see Notes 4, 5, 6 and 16, respectively.falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.No definition available.false0Subsequent EventsfalseSubsequent EventsUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.duke-energy.com/role/DisclosureSubsequentEvents12