v3.26.1
FINANCE COSTS - NET (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Debt Instrument [Line Items]        
Interest expense on borrowings (A) $ (26) $ (25) $ (52) $ (50)
Interest expense on finance leases (1) (1) (1) (1)
Interest cost on pension and other long-term benefits (2) (2) (4) (4)
Realized and unrealized (losses) / gains on debt derivatives at fair value (B) (4) (17) 1 (26)
Realized and unrealized exchange gains / (losses) on financing activities - net (B) 4 18 0 28
Other finance expenses (1) (3) (3) (5)
Capitalized borrowing costs (C) 2 1 3 2
Finance expenses (28) (29) (56) (56)
Finance costs - net (28) (29) $ (56) $ (56)
Property, plant and equipment, interest capitalization, percentage     5.00% 5.00%
Senior Unsecured Notes        
Debt Instrument [Line Items]        
Interest expense, borrowings $ 23 $ 22 $ 47 $ 44