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PENSION AND POSTRETIREMENT BENEFIT PLANS - Narrative (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2024
USD ($)
employee
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Aug. 31, 2024
age
Jul. 01, 2024
USD ($)
plan
Jun. 30, 2024
plan
Defined Benefit Plan Disclosure            
Defined benefit plan, number of plans | plan           2
Defined benefit plans, postretirement benefits, number of plans acquired | plan         2  
Defined benefit plan, age threshold for retirement benefits | age       65    
Curtailment loss $ 4          
Net periodic benefit costs 4          
Other long-term liabilities for the supplemental retirement plan 30 $ 24        
Expenses under provisions of defined contribution and supplemental plans $ 27 $ 19 $ 18      
Equity Securities            
Defined Benefit Plan Disclosure            
Target allocation of plan assets 45.00% 50.00%        
Debt Securities            
Defined Benefit Plan Disclosure            
Target allocation of plan assets 55.00% 50.00%        
Pension Benefits            
Defined Benefit Plan Disclosure            
Other assets $ 67 $ 2     $ 64  
Liability, defined benefit pension plan         8  
Net periodic benefit costs $ (2) 0 1      
Number of employees accruing benefits under defined benefit plans | employee 800          
Expected contribution in 2024 $ 1          
Fair value of plan assets $ 332 34 32      
Pension Benefits | Aera            
Defined Benefit Plan Disclosure            
Number of employees accruing benefits under defined benefit plans | employee 60          
Postretirement Benefits            
Defined Benefit Plan Disclosure            
Other assets $ 13 0     9  
Liability, defined benefit pension plan         $ 27  
Curtailment loss 4 3 0      
Net periodic benefit costs $ (2) $ (6) (2)      
Defined benefit plan, health care cost trend rate consumer price index 2.45% 2.38%        
Expected contribution in 2024 $ 7          
Fair value of plan assets $ 54 $ 1 $ 1      
Postretirement Benefits | Equity Securities            
Defined Benefit Plan Disclosure            
Target allocation of plan assets   40.00%        
Postretirement Benefits | Debt Securities            
Defined Benefit Plan Disclosure            
Target allocation of plan assets   60.00%        
Postretirement Benefits | Mutual funds            
Defined Benefit Plan Disclosure            
Fair value of plan assets   $ 1        
Postretirement Benefits | Union employees            
Defined Benefit Plan Disclosure            
Projected healthcare cost rate in ninth year after current fiscal year 4.50%          
Projected healthcare cost rate in tenth year and thereafter 4.50%          
Projected healthcare cost rate in tenth year after current fiscal year   4.50%        
Projected healthcare cost rate in eleventh year and thereafter   4.50%        
Postretirement Benefits | Minimum | Union employees            
Defined Benefit Plan Disclosure            
Projected healthcare cost rate in next fiscal year 6.50% 6.75%