XML 87 R45.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Organization and Basis of Presentation (Other Current Assets) (Details) - USD ($) $ in Millions | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Current Assets, Other [Member] |  |
Organization And Basis Of Presentation [Line Items] |  |
Tax receivable | $ 655 | $ 260

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | duk_OrganizationAndBasisOfPresentationLineItems
Namespace Prefix: | duk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax Cuts And Jobs Act Of 2017, Tax Receivable + References No definition available. + Details
Name: | duk_TaxCutsAndJobsActOf2017TaxReceivable
Namespace Prefix: | duk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |