v3.24.0.1
FAIR VALUE MEASUREMENTS AND DERIVATIVE INSTRUMENTS (Potential Offset of Counterparty Netting and Cash Collateral) (Details) - Energy Derivative Contracts - USD ($)
Feb. 08, 2024
Dec. 31, 2023
Dec. 31, 2022
Derivative Assets      
Gross Amount Recognized in the Balance Sheets   $ 35,000,000 $ 104,000,000
Counterparty Netting of Energy Contracts   15,000,000 14,000,000
Cash Collateral Received/Posted   0 14,000,000
Net Amount   20,000,000 76,000,000
Derivative Liabilities      
Gross Amount Recognized in the Balance Sheets   (30,000,000) (18,000,000)
Counterparty Netting of Energy Contracts   (15,000,000) (14,000,000)
Cash Collateral Received/Posted   0 0
Net Amount   $ (15,000,000) $ (4,000,000)
Subsequent Event      
Derivative Assets      
Cash Collateral Received/Posted $ 0