v3.26.3
PENSION AND POSTRETIREMENT BENEFIT PLANS (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Pension Benefit        
Net periodic benefit costs:        
Service cost - benefits earned during the period $ 0 $ 1 $ 1 $ 1
Interest cost on projected benefit obligation 3 4 10 11
Expected return on plan assets (6) (6) (18) (17)
Settlement (gain) loss (3) 0 (3) 1
Amortization of net actuarial loss 0 0 0 0
Amortization of prior service cost credit 0 0 0 0
Net periodic benefit costs (6) (1) (10) (4)
Postretirement Benefit        
Net periodic benefit costs:        
Service cost - benefits earned during the period 1 1 2 2
Interest cost on projected benefit obligation 1 1 3 4
Expected return on plan assets (1) (1) (3) (3)
Settlement (gain) loss 0 0 0 0
Amortization of net actuarial loss (1) 0 (1) (1)
Amortization of prior service cost credit (1) (2) (4) (4)
Net periodic benefit costs $ (1) $ (1) $ (3) $ (2)