Quarterly report [Sections 13 or 15(d)]

PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Pension and Other Postretirement Benefits (Details)

v3.25.2
PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Pension and Other Postretirement Benefits (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Net periodic benefit costs (credits) $ (43) $ (62) $ (100) $ (122)
Pension Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost 7 7 14 14
Interest cost 52 54 105 109
Expected return on plan assets (80) (80) (159) (160)
Prior service credits 5 4 9 8
Net actuarial loss (gain) (2) 0 (4) 0
Net periodic benefit costs (credits) (18) (15) (35) (29)
Defined benefit pension contributions 14 16 29 16
Defined benefit plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost 2 2 4 4
Interest cost 15 13 29 25
Expected return on plan assets (10) (10) (21) (21)
Termination benefits 15 0 15 2
Prior service credits (4) (4) (7) (8)
Net actuarial loss (gain) (34) (39) (67) (77)
Net periodic benefit costs (credits) (16) (38) (47) (75)
OPEB contributions $ 0 $ 0 $ 0 $ 0