v3.26.1
FINANCIAL INSTRUMENTS - Schedule of derivatives instruments performance (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivatives, Fair Value [Line Items]        
Unrealized (losses) / gains on derivatives - net $ (102) $ 33 $ (60) $ 21
Currency commercial derivatives | Derivatives that do not qualify for hedge accounting        
Derivatives, Fair Value [Line Items]        
Realized gains / (losses) on derivatives - net (1) 3 0 0
Unrealized (losses) / gains on derivatives - net (2) 23 (14) 38
Currency commercial derivatives | Derivatives that qualify for hedge accounting        
Derivatives, Fair Value [Line Items]        
Realized gains / (losses) on derivatives - net 1 (1) 3 (4)
Unrealized (losses) / gains on derivatives - net (1) 1 (1) 3
Unrealized (losses) / gains on foreign currency derivatives - net (2) 26 (9) 37
(Losses) / gains reclassified from cash flow hedge reserve to the Consolidated Income Statement (1) (1) (2) 0
Currency net debt derivatives | Derivatives that do not qualify for hedge accounting        
Derivatives, Fair Value [Line Items]        
Realized gains / (losses) on foreign currency derivatives - net (2) (16) 2 (25)
Unrealized losses on foreign currency derivatives - net (2) (1) (1) (1)
Total (4) (17) 1 (26)
Commodity | Derivatives that do not qualify for hedge accounting        
Derivatives, Fair Value [Line Items]        
Realized gains / (losses) on derivatives - net 67 (28) 104 (19)
Unrealized (losses) / gains on derivatives - net $ (100) $ 10 $ (46) $ (17)