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VARIABLE INTEREST ENTITIES (Tables)
6 Months Ended
Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of balance sheet impact of WEPCo Environmental Trust
The following table summarizes the impact of WEPCo Environmental Trust on our balance sheet.
(in millions)June 30, 2021
Assets
Other current assets (restricted cash)$1.6 
Regulatory assets106.0 
Other long-term assets (restricted cash)0.6 
Liabilities
Current portion of long-term debt4.1 
Other current liabilities (accrued interest)0.3 
Long-term debt111.1