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EMPLOYEE BENEFITS - Postretirement Benefits (Details) - Postretirement Benefits - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Postretirement Benefits      
Service cost $ 2 $ 2 $ 4
Interest cost 5 5 4
Expected return on assets (7) (6) (8)
Amortization of prior service credits (9) (10) (10)
Amortization of unrecognized gains (8) (7) (9)
Net periodic (benefits) costs (17) (16) (19)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at beginning of year 114 112  
Service cost 2 2 4
Interest cost 5 5 4
Plan participants' contributions 3 3  
Actuarial (gain) loss (12) 2  
Benefits paid (9) (10)  
Benefit obligation at end of year 103 114 112
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Plan assets available for benefits at beginning of year 173 162  
Actual returns on plan assets 11 18  
Plan participants' contributions 3 3  
Benefits paid (9) (10)  
Plan assets available for benefits at end of year 178 173 $ 162
Noncurrent postretirement benefit asset 75 59  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]      
Prior service credit 13 23  
Unrecognized gains 88 79  
Deferred tax liability (25) (25)  
Net accumulated gains $ 76 $ 77  
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 4.73% 4.92% 2.57%
Expected long-term rate of return on plan assets – net of tax 4.04% 4.04% 4.04%
Initial healthcare cost trend rate (pre age 65) 7.20% 7.50% 6.50%
Ultimate healthcare cost trend rate 4.50% 4.50% 4.50%
Year ultimate healthcare cost trend rate reached 2033 2033 2030
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate 5.39% 4.73% 4.92%
Expected long-term rate of return on plan assets – net of tax 4.04% 4.04% 4.04%
Initial healthcare cost trend rate (pre age 65) 6.90% 7.20% 7.50%
Ultimate healthcare cost trend rate 4.50% 4.50% 4.50%
Year ultimate healthcare cost trend rate reached 2033 2033 2033
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]      
2025 $ 9    
2026 9    
2027 9    
2028 8    
2029 8    
2030-2034 41    
Total $ 84