XML 71 R60.htm IDEA: XBRL DOCUMENT
v3.22.1

OPERATING REVENUES - OTHER OPERATING REVENUES (Details) - Other operating revenues - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Disaggregation of Operating Revenues |  |
Other operating revenues | $ 8.5 | $ 22.4
Late payment charges |  |
Disaggregation of Operating Revenues |  |
Other operating revenues | 13.6 | 15.0
Alternative revenues |  |
Disaggregation of Operating Revenues |  |
Other operating revenues | (6.0) | 6.2
Other |  |
Disaggregation of Operating Revenues |  |
Other operating revenues | $ 0.9 | $ 1.2

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 http://asc.fasb.org/extlink&oid=123367319&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: |