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ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Equity, attributable to parent, beginning of period $ 718    
Equity, attributable to parent, end of period 706 $ 718  
Post-employment benefit plans      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Equity, attributable to parent, beginning of period 80 115 $ (46)
Other comprehensive income / (loss) before reclassification 13 (23) 162
Amounts reclassified from accumulated other comprehensive loss to the income statement (9) (11) (1)
Amounts from disposal of entities reclassified to the income statement   (1)  
Equity, attributable to parent, end of period 84 80 115
Cash flow hedges      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Equity, attributable to parent, beginning of period (5) (10) (4)
Other comprehensive income / (loss) before reclassification (20) (1) (14)
Amounts reclassified from accumulated other comprehensive loss to the income statement 11 6 8
Amounts from disposal of entities reclassified to the income statement   0  
Equity, attributable to parent, end of period (14) (5) (10)
Currency translation adjustments      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Equity, attributable to parent, beginning of period (75) (69) (73)
Other comprehensive income / (loss) before reclassification (9) 2 4
Amounts reclassified from accumulated other comprehensive loss to the income statement 0 0 0
Amounts from disposal of entities reclassified to the income statement   (8)  
Equity, attributable to parent, end of period (84) (75) (69)
Accumulated other comprehensive (loss) / income      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Equity, attributable to parent, beginning of period 0 36 (123)
Other comprehensive income / (loss) before reclassification (16) (22) 152
Amounts reclassified from accumulated other comprehensive loss to the income statement 2 (5) 7
Amounts from disposal of entities reclassified to the income statement   (9)  
Equity, attributable to parent, end of period $ (14) $ 0 $ 36