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VARIABLE INTEREST ENTITIES (Tables)
3 Months Ended
Mar. 31, 2023
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)March 31, 2023December 31, 2022
Assets
Other current assets (restricted cash)$5.1 $3.0 
Regulatory assets90.9 92.4 
Other long-term assets (restricted cash)0.6 0.6 
Liabilities
Current portion of long-term debt8.9 8.9 
Accounts payable0.1 — 
Other current liabilities (accrued interest)0.5 0.1 
Long-term debt94.1 94.1