v3.26.1
PENSION AND OTHER POST-EMPLOYMENT BENEFIT OBLIGATIONS (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Pension        
Defined Benefit Plan Disclosure [Line Items]        
Current service cost $ (4) $ (5) $ (8) $ (9)
Interest cost (7) (5) (13) (11)
Expected return on plan assets 6 5 12 11
Immediate recognition of losses arising over the year 0 0 0 0
Amortization of past service gain 1 1 1 1
Amortization of net actuarial gain 0 0 0 0
Total net pension and other long-term benefit cost (4) (4) (8) (8)
OPEB and Other Benefits        
Defined Benefit Plan Disclosure [Line Items]        
Current service cost (2) (1) (3) (2)
Interest cost (1) (2) (3) (4)
Expected return on plan assets 0 0 0 0
Immediate recognition of losses arising over the year (4) 0 (4) 0
Amortization of past service gain 2 2 5 5
Amortization of net actuarial gain 1 1 1 1
Total net pension and other long-term benefit cost $ (4) $ 0 $ (4) $ 0