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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - General (Narrative) (Details)
Dec. 31, 2023
state
company
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Number of traditional electric operating companies | company 3
Traditional Electric Operating Companies  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Number of states in which entity provides utilities | state 3