v3.26.1
Information by business segment and geographic area (Details 1) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
IfrsStatementLineItems [Line Items]      
Net operating revenue $ 38,403 $ 38,056 $ 41,784
Iron Ore [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 25,010 24,805 27,760
Iron Ore Pellets [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 4,396 5,921 5,803
Other Ferrous Products And Services [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 724 718 516
Iron Solutions [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 30,130 31,444 34,079
Nickel And Other Products [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 4,291 3,666 5,193
Copper [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 3,753 2,805 2,376
Other [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 229 141 136
Energy Transition Metals [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 8,273 6,612 7,569
Country Of China [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 19,405 19,375 22,210
Country Of China [Member] | Iron Ore [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 18,517 18,157 21,061
Country Of China [Member] | Iron Ore Pellets [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 16 2
Country Of China [Member] | Other Ferrous Products And Services [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue
Country Of China [Member] | Iron Solutions [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 18,533 18,157 21,063
Country Of China [Member] | Nickel And Other Products [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 523 432 693
Country Of China [Member] | Copper [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 301 717 454
Country Of China [Member] | Other [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 48 69
Country Of China [Member] | Energy Transition Metals [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 872 1,218 1,147
Country Of Japan [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 2,425 3,050 3,219
Country Of Japan [Member] | Iron Ore [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1,990 2,380 2,356
Country Of Japan [Member] | Iron Ore Pellets [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 170 278 279
Country Of Japan [Member] | Other Ferrous Products And Services [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 2 2 1
Country Of Japan [Member] | Iron Solutions [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 2,162 2,660 2,636
Country Of Japan [Member] | Nickel And Other Products [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 263 360 583
Country Of Japan [Member] | Copper [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue
Country Of Japan [Member] | Other [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 30
Country Of Japan [Member] | Energy Transition Metals [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 263 390 583
Asia Except Japan And China [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 3,873 2,887 2,675
Asia Except Japan And China [Member] | Iron Ore [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 2,464 2,040 1,691
Asia Except Japan And China [Member] | Iron Ore Pellets [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 323 378 407
Asia Except Japan And China [Member] | Other Ferrous Products And Services [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 20 11 10
Asia Except Japan And China [Member] | Iron Solutions [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 2,807 2,429 2,108
Asia Except Japan And China [Member] | Nickel And Other Products [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 412 381 462
Asia Except Japan And China [Member] | Copper [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 588 77 105
Asia Except Japan And China [Member] | Other [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 66
Asia Except Japan And China [Member] | Energy Transition Metals [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1,066 458 567
Country Of Brazil [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 3,135 3,565 3,755
Country Of Brazil [Member] | Iron Ore [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 979 1,085 1,370
Country Of Brazil [Member] | Iron Ore Pellets [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1,362 1,706 1,684
Country Of Brazil [Member] | Other Ferrous Products And Services [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 702 704 502
Country Of Brazil [Member] | Iron Solutions [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 3,043 3,495 3,556
Country Of Brazil [Member] | Nickel And Other Products [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 69 50 63
Country Of Brazil [Member] | Copper [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue
Country Of Brazil [Member] | Other [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 23 20 136
Country Of Brazil [Member] | Energy Transition Metals [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 92 70 63
Country Of United States Of America [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1,108 1,075 1,623
Country Of United States Of America [Member] | Iron Ore [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 26
Country Of United States Of America [Member] | Iron Ore Pellets [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 193 172 262
Country Of United States Of America [Member] | Other Ferrous Products And Services [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue
Country Of United States Of America [Member] | Iron Solutions [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 193 198 262
Country Of United States Of America [Member] | Nickel And Other Products [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 869 855 1,361
Country Of United States Of America [Member] | Copper [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue
Country Of United States Of America [Member] | Other [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 46 22
Country Of United States Of America [Member] | Energy Transition Metals [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 915 877 1,361
Americas Except United States And Brazil [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 763 970 897
Americas Except United States And Brazil [Member] | Iron Ore [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1
Americas Except United States And Brazil [Member] | Iron Ore Pellets [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 192 443 398
Americas Except United States And Brazil [Member] | Other Ferrous Products And Services [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1 1
Americas Except United States And Brazil [Member] | Iron Solutions [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 192 444 400
Americas Except United States And Brazil [Member] | Nickel And Other Products [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 571 429 456
Americas Except United States And Brazil [Member] | Copper [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 97 41
Americas Except United States And Brazil [Member] | Other [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue
Americas Except United States And Brazil [Member] | Energy Transition Metals [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 571 526 497
Country Of Germany [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1,853 1,467 1,351
Country Of Germany [Member] | Iron Ore [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 310 316 244
Country Of Germany [Member] | Iron Ore Pellets [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 138 188 55
Country Of Germany [Member] | Other Ferrous Products And Services [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 2
Country Of Germany [Member] | Iron Solutions [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 448 504 301
Country Of Germany [Member] | Nickel And Other Products [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 574 401 458
Country Of Germany [Member] | Copper [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 825 562 592
Country Of Germany [Member] | Other [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 6
Country Of Germany [Member] | Energy Transition Metals [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1,405 963 1,050
Europe Except Germany [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 3,871 3,019 3,677
Europe Except Germany [Member] | Iron Ore [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 750 794 1,037
Europe Except Germany [Member] | Iron Ore Pellets [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 89 146 374
Europe Except Germany [Member] | Other Ferrous Products And Services [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue
Europe Except Germany [Member] | Iron Solutions [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 839 940 1,411
Europe Except Germany [Member] | Nickel And Other Products [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 953 727 1,082
Europe Except Germany [Member] | Copper [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 2,039 1,352 1,184
Europe Except Germany [Member] | Other [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 40
Europe Except Germany [Member] | Energy Transition Metals [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 3,032 2,079 2,266
Middle East Africa And Oceania [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1,970 2,648 2,377
Middle East Africa And Oceania [Member] | Iron Ore [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 7
Middle East Africa And Oceania [Member] | Iron Ore Pellets [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1,913 2,610 2,342
Middle East Africa And Oceania [Member] | Other Ferrous Products And Services [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue
Middle East Africa And Oceania [Member] | Iron Solutions [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 1,913 2,617 2,342
Middle East Africa And Oceania [Member] | Nickel And Other Products [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue 57 31 35
Middle East Africa And Oceania [Member] | Copper [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue
Middle East Africa And Oceania [Member] | Other [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue
Middle East Africa And Oceania [Member] | Energy Transition Metals [Member]      
IfrsStatementLineItems [Line Items]      
Net operating revenue $ 57 $ 31 $ 35