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CONTINGENCIES (Details) $ in Millions |  | 1 Months Ended | 6 Months Ended | 60 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 04, 2022 bankAccount | Jan. 31, 2022 USD ($) | Aug. 31, 2021 USD ($) | Apr. 30, 2017 USD ($) | Jun. 30, 2022 USD ($) claim | Dec. 31, 2018 USD ($) claim | Apr. 30, 2022 USD ($)
Social Security tax |  |  |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |  |  |
Unused provision reversed |  |  |  |  | $ 240 |  |
Social Security tax | ArcelorMittal Brasil S.A. |  |  |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |  |  |
Number of claims filed | claim |  |  |  |  | 6 | 6 |
Tax penalty sought |  | $ 13 |  |  |  | $ 38 |
Reduction in tax penalty sought |  |  |  |  |  | $ 4 |
Other legal claims and contingencies | Shareholder of Siderurgica Tres Lagoas |  |  |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |  |  |
Damages sought |  |  |  | $ 32 |  |  |
Estimated financial effect of contingent liabilities |  |  |  |  |  |  | $ 126
Estimated financial effect of contingent liabilities, net |  |  |  |  |  |  | $ 67
Ukrainian tax audit | ArcelorMittal Kryvyi Rih |  |  |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |  |  |
Damages sought |  |  | $ 96 |  |  |  |
Number of bank accounts, blocked | bankAccount | 3 |  |  |  |  |  |
Number of bank accounts, restrictions lifted | bankAccount | 2 |  |  |  |  |  |

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