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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Schedule of Other Changes in Plan Assets and Benefit Obligations Recognized in OCI (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]      
Current year actuarial loss / (gain) $ (48) $ 9 $ 99
Current year prior service cost (credit) 0 0 1
Total recognized in other comprehensive income (loss) (pre-tax) (79) $ (30) $ 99
Other Postretirement Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]      
Current year actuarial loss / (gain) (5)    
Actuarial (loss) recognized during the year 2    
Current year prior service cost (credit) 0    
Prior service credit (cost) recognized during the year 1    
Total recognized in other comprehensive income (loss) (pre-tax) (2)    
Total recognized in net periodic benefit costs and other comprehensive income (loss) (pre-tax) 2    
United States Pension Benefits | Pension Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]      
Current year actuarial loss / (gain) (44)    
Actuarial (loss) recognized during the year (40)    
Current year prior service cost (credit) 0    
Prior service credit (cost) recognized during the year 0    
Total recognized in other comprehensive income (loss) (pre-tax) (84)    
Total recognized in net periodic benefit costs and other comprehensive income (loss) (pre-tax) (64)    
Foreign Pension Benefits | Pension Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plan [Line Items]      
Current year actuarial loss / (gain) 1    
Actuarial (loss) recognized during the year 6    
Current year prior service cost (credit) 0    
Prior service credit (cost) recognized during the year 0    
Total recognized in other comprehensive income (loss) (pre-tax) 7    
Total recognized in net periodic benefit costs and other comprehensive income (loss) (pre-tax) $ 10