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Acquisitions and divestitures - (Details 2) - USD ($) $ in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Jun. 22, 2021 | Dec. 31, 2020
Acquired assets |  |  |  |  |
Cash and cash equivalents | $ (3,609) | $ (4,736) | $ (11,721) |  | $ (13,487)
Property, plant and equipment, fair value adjustments | 916 |  |  |  |
Nacala Corridor Holding [Member] | Discontinued operations [member] |  |  |  |  |
Acquired assets |  |  |  |  |
Cash and cash equivalents |  |  |  | $ 172 |
Inventory, recoverable tax, and other assets |  |  |  | 423 |
Intangibles |  |  |  | 2,219 |
Property, plant, and equipment |  |  |  | 1,363 |
Assumed liabilities |  |  |  | (158) |
Net identifiable assets acquired |  |  |  | 4,019 |
Fair value adjustments (i) |  |  |  | (1,590) |
Total identifiable net assets at fair value |  |  |  | 2,429 |
Pre-existing relation (Loans receivable from NLC) |  |  |  | 859 |
Loss on pre-existing relation |  |  |  | (771) |
Total identifiable net assets at fair value |  |  |  | 2,517 |
Cash consideration |  |  |  | 2,517 |
Cash and cash equivalents |  |  |  | (172) |
Net cash outflow |  |  |  | 2,345 |
Property, plant and equipment, fair value adjustments | $ 441 |  |  |  |
Intangible assets, fair value adjustments |  |  |  | $ 791 |

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