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PENSION AND OTHER POST-EMPLOYMENT BENEFITS - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
May 13, 2023
May 12, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]            
Defined benefit plan, assumptions used calculating benefit obligation, increase (decrease) in discount rate       0.29%    
Employee benefit plan funding and related payments         $ (31) $ (30)
Pension            
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]            
Voluntary cash contribution   $ 750        
Discount rate 8.00%          
Expected future contributions   $ 260        
Pension and OPEB mark-to -market adjustment     $ 0 $ 59 $ 0 $ 59