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Brumadinho dam failure (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning | $ 3,537 |
Monetary and present value adjustments | 165 |
Disbursements | (1,093) |
Translation adjustment | 303 |
Balance at the ending | 3,312 | $ 3,537
Operating expense | 400 |
Current liabilities | 944 | 1,156
Non-current liabilities | 2,368 | 2,381
Liabilities | 3,312 | 3,537
Expense incurred in relation to Brumadinho event | 620 | 650
Global Settlement for Brumadinho |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning | 2,984 |
Monetary and present value adjustments | 175 |
Disbursements | (904) |
Translation adjustment | 271 |
Balance at the ending | 2,526 | 2,984
Liabilities | $ 2,526 | $ 2,984
Discount rate | 9.08% | 8.08%
Global Settlement for Brumadinho | Payment Obligations [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning | $ 1,427 |
Monetary and present value adjustments | 113 |
Disbursements | (795) |
Translation adjustment | 137 |
Balance at the ending | 882 | $ 1,427
Liabilities | 882 | 1,427
Global Settlement for Brumadinho | Provision For Socio Economic Reparation And Others [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning | 852 |
Monetary and present value adjustments | 3 |
Disbursements | (72) |
Translation adjustment | 84 |
Balance at the ending | 867 | 852
Liabilities | 867 | 852
Global Settlement for Brumadinho | Provision For Social And Environmental Reparation [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning | 705 |
Monetary and present value adjustments | 59 |
Disbursements | (37) |
Translation adjustment | 50 |
Balance at the ending | 777 | 705
Liabilities | 777 | 705
Commitment [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning | 553 |
Monetary and present value adjustments | (10) |
Disbursements | (189) |
Translation adjustment | 32 |
Balance at the ending | 786 | 553
Operating expense | 400 |
Liabilities | 786 | 553
Commitment [Member] | Tailings Containment And Geotechnical Safety [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning | 318 |
Monetary and present value adjustments | (1) |
Disbursements | (80) |
Translation adjustment | 19 |
Balance at the ending | 559 | 318
Operating expense | 303 |
Liabilities | 559 | 318
Commitment [Member] | Individual Indemnification [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning | 115 |
Monetary and present value adjustments | (4) |
Disbursements | (74) |
Translation adjustment | 8 |
Balance at the ending | 45 | 115
Liabilities | 45 | 115
Commitment [Member] | Other Commitments [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning | 120 |
Monetary and present value adjustments | (5) |
Disbursements | (35) |
Translation adjustment | 5 |
Balance at the ending | 182 | 120
Operating expense | 97 |
Liabilities | $ 182 | $ 120

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