v3.26.3
FINANCE COSTS - NET (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Debt Instrument [Line Items]        
Interest expense on borrowings (A) $ (24) $ (27) $ (76) $ (77)
Interest expense on finance leases 0 0 (1) (1)
Interest cost on pension and other long-term benefits (2) (1) (6) (5)
Net loss on settlement of debt (1) 0 (1) 0
Realized and unrealized (losses) / gains on debt derivatives at fair value (B) 2 1 3 (25)
Realized and unrealized exchange gains / (losses) on financing activities - net (B) 0 1 0 29
Other finance expenses (2) (2) (5) (7)
Capitalized borrowing costs (C) 0 1 3 3
Finance expenses (27) (27) (83) (83)
Finance costs - net (27) (27) $ (83) $ (83)
Property, plant and equipment, interest capitalization, percentage     5.00% 5.00%
Senior Unsecured Notes        
Debt Instrument [Line Items]        
Interest expense, borrowings $ 22 $ 23 $ 69 $ 67