v3.25.4
PROVISIONS, CONTINGENCIES AND COMMITMENTS - Provisions Overview (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of other provisions [line items]      
Provisions, beginning balance $ 2,298 $ 2,065  
Additions 883 980  
Deductions/ Payments (883) (576)  
Effects of foreign exchange and other movements 357 (171)  
Short-term provisions 1,039 938 $ 588
Long-term provisions 1,616 1,361 $ 1,477
Provisions, ending balance 2,655 2,298  
Environmental      
Disclosure of other provisions [line items]      
Provisions, beginning balance 506 620  
Additions 54 120  
Deductions/ Payments (76) (207)  
Effects of foreign exchange and other movements 69 (27)  
Provisions, ending balance 553 506  
Emission obligations      
Disclosure of other provisions [line items]      
Provisions, beginning balance 420 29  
Additions 488 423  
Deductions/ Payments (423) (15)  
Effects of foreign exchange and other movements 21 (17)  
Provisions, ending balance 506 420  
Asset retirement obligations      
Disclosure of other provisions [line items]      
Provisions, beginning balance 478 380  
Additions 43 172  
Deductions/ Payments (66) (34)  
Effects of foreign exchange and other movements 46 (40)  
Provisions, ending balance 501 478  
Site restoration      
Disclosure of other provisions [line items]      
Provisions, beginning balance 109 147  
Additions 15 21  
Deductions/ Payments (25) (52)  
Effects of foreign exchange and other movements 17 (7)  
Provisions, ending balance 116 109  
Staff related obligations      
Disclosure of other provisions [line items]      
Provisions, beginning balance 144 162  
Additions 111 37  
Deductions/ Payments (38) (41)  
Effects of foreign exchange and other movements 25 (14)  
Provisions, ending balance 242 144  
Voluntary separation plans      
Disclosure of other provisions [line items]      
Provisions, beginning balance 86 32  
Additions 80 66  
Deductions/ Payments (74) (22)  
Effects of foreign exchange and other movements 22 10  
Provisions, ending balance 114 86  
Litigation and other (see note 9.3)      
Disclosure of other provisions [line items]      
Provisions, beginning balance 305 349  
Additions 38 79  
Deductions/ Payments (89) (87)  
Effects of foreign exchange and other movements 150 (36)  
Provisions, ending balance 404 305  
Tax claims      
Disclosure of other provisions [line items]      
Provisions, beginning balance 79 81  
Additions 7 18  
Deductions/ Payments (36) (11)  
Effects of foreign exchange and other movements 127 (9)  
Provisions, ending balance 177 79  
Other legal claims      
Disclosure of other provisions [line items]      
Provisions, beginning balance 226 268  
Additions 31 61  
Deductions/ Payments (53) (76)  
Effects of foreign exchange and other movements 23 (27)  
Provisions, ending balance 227 226  
Commercial agreements and onerous contracts      
Disclosure of other provisions [line items]      
Provisions, beginning balance 33 29  
Additions 9 24  
Deductions/ Payments (27) (16)  
Effects of foreign exchange and other movements 3 (4)  
Provisions, ending balance 18 33  
Other      
Disclosure of other provisions [line items]      
Provisions, beginning balance 217 317  
Additions 45 38  
Deductions/ Payments (65) (102)  
Effects of foreign exchange and other movements 4 (36)  
Provisions, ending balance $ 201 $ 217