XML 75 R64.htm IDEA: XBRL DOCUMENT
v3.23.1

OPERATING REVENUES - OTHER OPERATING REVENUES (Details) - Other operating revenues - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Disaggregation of Operating Revenues |  |
Other operating revenues | $ 29.9 | $ 8.5
Late payment charges |  |
Disaggregation of Operating Revenues |  |
Other operating revenues | 17.2 | 13.6
Alternative revenues |  |
Disaggregation of Operating Revenues |  |
Other operating revenues | 11.8 | (6.0)
Other |  |
Disaggregation of Operating Revenues |  |
Other operating revenues | $ 0.9 | $ 0.9

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

X
- Definition Amount of revenue that is not accounted for under Topic 606. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
Name: | us-gaap_RevenueNotFromContractWithCustomer
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | wec_TypesofOperatingRevenuesAxis=wec_OtheroperatingrevenuesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | wec_TypesofOtherOperatingRevenuesAxis=wec_LatepaymentchargesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | wec_TypesofOtherOperatingRevenuesAxis=wec_AlternativerevenuesutilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | wec_TypesofOtherOperatingRevenuesAxis=wec_LeasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |