XML 116 R105.htm IDEA: XBRL DOCUMENT
v3.23.1

REGULATORY ENVIRONMENT - 2023 MGU RATE CASE (Details) - MGU - MichiganPublicServiceCommissionMPSC $ in Millions | Mar. 03, 2023 USD ($)
--- | ---
Public Utilities, General Disclosures [Line Items] |
Requested rate increase | $ 19.1
Requested rate increase (as a percent) | 9.10%
Requested return on equity (as a percent) | 10.40%
Requested common equity component average (as a percent) | 51.40%
Requested extension of rider | 2 years

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 Percentage of public utility's requested equity to capital, including debt and equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedEquityCapitalStructurePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
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
- Definition Percentage of public utility's requested rate increase (decrease) with regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedRateIncreaseDecreasePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of public utility's requested return on equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Requested number of years that MGU's Main Replacement Project (MRP) rider will be extended + References No definition available. + Details
Name: | wec_RequestedExtensionOfRider
Namespace Prefix: | wec_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_RegulatoryAgencyAxis=wec_MichiganPublicServiceCommissionMPSCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |