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VARIABLE INTEREST ENTITIES (Tables)
3 Months Ended
Mar. 31, 2022
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, 2022December 31, 2021
Assets
Other current assets (restricted cash)$5.6 $2.4 
Regulatory assets98.2 100.7 
Other long-term assets (restricted cash)0.6 0.6 
Liabilities
Current portion of long-term debt8.8 8.8 
Accounts payable0.1 — 
Other current liabilities (accrued interest)0.5 0.1 
Long-term debt102.8 102.7