XML 93 R52.htm IDEA: XBRL DOCUMENT
v3.22.1

Regulatory Matters (Regulatory Matters Narrative - Piedmont) (Details) - 2022 South Carolina Rate Case - PSCSC - Piedmont - Subsequent event $ in Millions | Apr. 01, 2022 USD ($)
--- | ---
Public Utilities, General Disclosures [Line Items] |
Requested rate increase (decrease), amount | $ 7
Requested rate increase, percentage, net of tax | 3.40%

X
- Definition Public Utilities, Requested Rate Increase (Decrease), Percentage, Net Of Tax + References No definition available. + Details
Name: | duk_PublicUtilitiesRequestedRateIncreaseDecreasePercentageNetOfTax
Namespace Prefix: | duk_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount of public utility's requested rate increase (decrease) with regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=duk_A2022SouthCarolinaRateCaseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAgencyAxis=duk_PSCSCMember
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: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |