v3.26.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Equity, beginning balance $ 1,132 $ 765 $ 971 $ 727
Equity, ending balance 1,254 799 1,254 799
Accumulated other comprehensive income / (loss)        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Equity, beginning balance 39 (1) 54 (14)
Other comprehensive income / (loss) before reclassification (3) 31 (14) 43
Amounts reclassified from accumulated other comprehensive income / (loss) to the income statement (4) (4) (8) (5)
Amounts reclassified from accumulated other comprehensive income / (loss) to retained earnings 2   2 2
Equity, ending balance 34 26 34 26
Post-employment benefit plans        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Equity, beginning balance 111 82 115 84
Other comprehensive income / (loss) before reclassification (1) 2 (2) 2
Amounts reclassified from accumulated other comprehensive income / (loss) to the income statement (3) (3) (6) (5)
Amounts reclassified from accumulated other comprehensive income / (loss) to retained earnings 0   0 0
Equity, ending balance 107 81 107 81
Cash flow hedges        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Equity, beginning balance 2 (5) 8 (14)
Other comprehensive income / (loss) before reclassification (1) 19 (6) 27
Amounts reclassified from accumulated other comprehensive income / (loss) to the income statement (1) (1) (2) 0
Amounts reclassified from accumulated other comprehensive income / (loss) to retained earnings 0   0 0
Equity, ending balance 0 13 0 13
Currency translation adjustments        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Equity, beginning balance (74) (78) (69) (84)
Other comprehensive income / (loss) before reclassification (1) 10 (6) 14
Amounts reclassified from accumulated other comprehensive income / (loss) to the income statement 0 0 0 0
Amounts reclassified from accumulated other comprehensive income / (loss) to retained earnings 2   2 2
Equity, ending balance $ (73) $ (68) $ (73) $ (68)