v3.24.0.1
EMPLOYEE BENEFITS PLANS (Changes in Regulatory Assets and Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Pension Benefits | Regulatory Asset      
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Current Year Actuarial Loss (Gain) $ 22 $ (27) $ (16)
Prior Service Benefit Amortization 0 0 0
Amortization of Net Loss (5) (6) (8)
Prior Service Cost 0 0 0
Effect of Settlement 0 (3) 0
Total Recognized Loss (Gain) 17 (36) (24)
Pension Benefits | AOCL      
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Current Year Actuarial Loss (Gain) 1 (9) 0
Prior Service Benefit Amortization 0 0 0
Amortization of Net Loss 0 (1) (1)
Prior Service Cost 0 1 0
Effect of Settlement 0 0 0
Total Recognized Loss (Gain) 1 (9) (1)
Other Postretirement Benefits | Regulatory Asset/Liability      
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Current Year Actuarial Loss (Gain) 4 (11) (13)
Prior Service Benefit Amortization 0 1 0
Amortization of Net Loss 0 0 (1)
Prior Service Cost 0 0 0
Effect of Settlement 0 0 0
Total Recognized Loss (Gain) $ 4 $ (10) $ (14)