Quarterly report pursuant to Section 13 or 15(d)

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

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PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Pension and Other Postretirement Benefits (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Mar. 31, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Pension Plan          
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]          
Service cost $ 7   $ 8 $ 21 $ 24
Interest cost 54   59 163 176
Expected return on plan assets (80)   (79) (240) (236)
Prior service credits 5   5 13 13
Net actuarial loss (gain) 0   0 0 2
Net periodic benefit costs (credits) (14)   (7) (43) (21)
Defined benefit pension contributions 75   0 91 0
Defined benefit plan          
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]          
Service cost 2   2 6 7
Interest cost 13   15 38 47
Expected return on plan assets (11)   (10) (32) (31)
Termination benefits 0 $ 2 0 2 0
Prior service credits (4)   (4) (12) (12)
Net actuarial loss (gain) (39)   (36) (116) (109)
Net periodic benefit costs (credits) (39)   (33) (114) (98)
OPEB contributions $ 0   $ 0 $ 0 $ 0