v3.25.4
FINANCING AND FINANCIAL INSTRUMENTS - Derivative Financial Instruments - Classified as Level 2 (Details) - Level 2 - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]    
Derivative assets, fair value $ 298 $ 438
Derivative liabilities, fair value (416) (638)
Total interest rate instruments    
Disclosure of detailed information about financial instruments [line items]    
Derivative assets, fair value 1 0
Derivative liabilities, fair value 0 0
Other interest rate instruments    
Disclosure of detailed information about financial instruments [line items]    
Derivative asset, notional amount 258 8
Derivative assets, fair value 1 0
Derivative liabilities, notional amount 15 20
Derivative liabilities, fair value 0 0
Total foreign exchange rate instruments    
Disclosure of detailed information about financial instruments [line items]    
Derivative assets, fair value 102 266
Derivative liabilities, fair value (165) (518)
Forward purchase contracts    
Disclosure of detailed information about financial instruments [line items]    
Derivative asset, notional amount 168 499
Derivative assets, fair value 4 35
Derivative liabilities, notional amount 116 195
Derivative liabilities, fair value (6) (39)
Forward sale contracts    
Disclosure of detailed information about financial instruments [line items]    
Derivative asset, notional amount 332 59
Derivative assets, fair value 6 6
Derivative liabilities, notional amount 389 1,088
Derivative liabilities, fair value (12) (113)
Exchange option purchases    
Disclosure of detailed information about financial instruments [line items]    
Derivative asset, notional amount 1,063 4,203
Derivative assets, fair value 15 67
Derivative liabilities, notional amount 1,368 75
Derivative liabilities, fair value (5) 0
Exchange options sales    
Disclosure of detailed information about financial instruments [line items]    
Derivative asset, notional amount 3,974 1
Derivative assets, fair value 43 0
Derivative liabilities, notional amount 3,333 3,602
Derivative liabilities, fair value (55) (294)
Total raw materials (base metals), freight, energy, emission rights    
Disclosure of detailed information about financial instruments [line items]    
Derivative assets, fair value 195 172
Derivative liabilities, fair value (251) (120)
Term contracts sales    
Disclosure of detailed information about financial instruments [line items]    
Derivative asset, notional amount 486 386
Derivative assets, fair value 58 26
Derivative liabilities, notional amount 371 302
Derivative liabilities, fair value (38) (44)
Term contracts purchases    
Disclosure of detailed information about financial instruments [line items]    
Derivative asset, notional amount 1,082 571
Derivative assets, fair value 126 146
Derivative liabilities, notional amount 1,249 651
Derivative liabilities, fair value (196) (76)
Options sales/purchases    
Disclosure of detailed information about financial instruments [line items]    
Derivative asset, notional amount 633 3
Derivative assets, fair value 11 0
Derivative liabilities, notional amount 391 0
Derivative liabilities, fair value (17) 0
Currency swaps sales    
Disclosure of detailed information about financial instruments [line items]    
Derivative asset, notional amount 1,339 1,189
Derivative assets, fair value 10 7
Derivative liabilities, notional amount 4,169 3,734
Derivative liabilities, fair value (81) (55)
Currency swaps purchase    
Disclosure of detailed information about financial instruments [line items]    
Derivative asset, notional amount 3,216 2,614
Derivative assets, fair value 24 151
Derivative liabilities, notional amount 534 1,701
Derivative liabilities, fair value $ (6) $ (17)