XML 193 R136.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Revenue (Unbilled Revenues) (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled receivables | $ 964 | $ 969
Duke Energy Carolinas |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled receivables | 316 | 328
Progress Energy |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled receivables | 266 | 283
Duke Energy Progress |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled receivables | 193 | 167
Duke Energy Florida |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled receivables | 73 | 116
Duke Energy Ohio |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled receivables | 4 | 2
Duke Energy Ohio | CRC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled receivables | 82 | 87
Duke Energy Indiana |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled receivables | 27 | 16
Duke Energy Indiana | CRC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled receivables | 121 | 134
Piedmont |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled receivables | $ 106 | $ 86

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: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. + References No definition available. + Details
Name: | us-gaap_UnbilledReceivablesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyCarolinasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_ProgressEnergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyProgressMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyFloridaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyOhioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=duk_CinergyReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyIndianaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_PiedmontNaturalGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |