v3.25.3
PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Schedule of Pension and Other Postretirement Expenses (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Pension Benefits        
Components of Net Periodic Cost:        
Service Cost $ 1 $ 2 $ 4 $ 5
Interest Cost 6 6 17 17
Expected Return on Plan Assets (6) (6) (18) (17)
Net Curtailment/Settlement Loss 0 0 0 1
Amortization:        
Actuarial Loss (Gain) 1 1 3 3
Net Periodic Cost (Benefit) 2 3 6 9
Postretirement Benefits        
Components of Net Periodic Cost:        
Service Cost 0 0 0 0
Interest Cost 1 1 1 1
Expected Return on Plan Assets 0 0 0 0
Net Curtailment/Settlement Loss 0 0 0 0
Amortization:        
Actuarial Loss (Gain) (2) (1) (2) (2)
Net Periodic Cost (Benefit) $ (1) $ 0 $ (1) $ (1)