Quarterly report [Sections 13 or 15(d)]

PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Contributions (Details)

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PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Contributions (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Pension and other postretirement benefits        
Defined contribution pension plans $ 25 $ 24 $ 94 $ 100
Defined benefit pension contributions        
Pension and other postretirement benefits        
Defined benefit pension contributions and OPEB payments, net 11 11 35 34
OPEB payments, net        
Pension and other postretirement benefits        
Defined benefit pension contributions and OPEB payments, net $ 2 $ 1 $ 6 $ 4