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Related parties - Transactions with related parties (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | $ 1,182 | $ 1,162 | $ 797
Financial result |  | 344 | (530) | (26)
Cost and operating expenses |  | (1,024) | (878) | (571)
Discontinued operations [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Financial result |  |  | 15 | 23
Cost and operating expenses |  |  | (95) | (405)
Aggregate continuing and discontinued operations [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | 1,182 | 1,162 | 797
Financial result |  | 344 | (515) | (3)
Cost and operating expenses |  | (1,024) | (973) | (976)
Joint ventures where entity is venturer [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | 434 | 640 | 353
Financial result |  | (3) | 3 | 8
Alianca Geracao de Energia S.A. |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  |  | 5 | 19
Cost and operating expenses |  | (121) | (105) | (105)
Pelletizing Companies [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Financial result | [1] | (34) | (15) | (17)
Cost and operating expenses | [1] | (337) | (349) | (100)
Mrs Logistica S.a. [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | 1 |  |
Cost and operating expenses |  | (397) | (279) | (227)
Norte Energia S.a. [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Cost and operating expenses |  | (135) | (114) | (101)
Other Joint Ventures [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | 41 |  |
Financial result |  |  | (1) | 13
Cost and operating expenses |  | (8) | (10) | (13)
Joint ventures [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | 476 | 645 | 372
Financial result |  | (37) | (13) | 4
Cost and operating expenses |  | (998) | (857) | (546)
Vli S.a. [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | 289 | 255 | 235
Financial result |  | (3) | (2) | (1)
Cost and operating expenses |  | (26) | (21) | (25)
Other Associates [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | 1 | 1 | 5
Financial result |  |  |  | 3
Associates [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | 290 | 256 | 240
Financial result |  | (3) | (2) | 2
Cost and operating expenses |  | (26) | (21) | (25)
Bradesco [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Financial result |  | 381 | (528) | (49)
Banco Do Brasil [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Financial result |  | 3 | 13 | 17
Mitsui Co. Ltd [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | 416 | 261 | 185
Major Stockholders [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net operating revenue |  | 416 | 261 | 185
Financial result |  | $ 384 | $ (515) | $ (32)
[1] | Aggregated entities: Companhia Coreano-Brasileira de Pelotização, Companhia Hispano-Brasileira de Pelotização, Companhia Ítalo-Brasileira de Pelotização and Companhia Nipo-Brasileira de Pelotização.

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