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Note 35 - Nationalization of Venezuelan subsidiaries (Details Textual) - USD ($) $ in Millions |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 12, 2016 | Dec. 31, 2023 | Jan. 25, 2023 | Nov. 05, 2021 | Aug. 24, 2021 | Jul. 17, 2020 | Jan. 29, 2016
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |
Nationalization of subsidiaries compensation award collected |  | $ 82.0 |  |  |  |  |
Nationalization of subsidiaries net results |  | $ 33.3 |  |  |  |  |
TALTA—TRADING E MARKETING SOCIEDADE UNIPESSOAL LDA. [member] | VENEZUELA | Awards purchase agreement [member] |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |
Purchase agreement |  |  | $ 81.0 |  |  |  |
Non-refundable signing payment as reimbursement of expenses |  |  | $ 1.0 |  |  |  |
Matesi Materiales Siderúrgicos S.A [member] | TALTA—TRADING E MARKETING SOCIEDADE UNIPESSOAL LDA. [member] | VENEZUELA | ICSID in Washington D.C. [member] |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |
Nationalization of subsidiaries, compensation award not including pre-award interest |  |  |  |  |  |  | $ 87.3
Nationalization of subsidiaries, pre-award interest |  |  |  |  |  |  | 85.5
Nationalization of subsidiaries, compensation award including pre-award interest and legal fees |  |  |  |  |  |  | 173.0
Nationalization of subsidiaries, reimbursement of legal fees and administrative costs |  |  |  |  |  |  | $ 0.2
Matesi Materiales Siderúrgicos S.A [member] | TALTA—TRADING E MARKETING SOCIEDADE UNIPESSOAL LDA. [member] | VENEZUELA | Federal court in District of Columbia [member] |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |
Nationalization of subsidiaries, compensation award including including principal and post-award interest |  |  |  |  |  | $ 256.4 |
Tavsa and Comsigua [member] | TALTA—TRADING E MARKETING SOCIEDADE UNIPESSOAL LDA. [member] | VENEZUELA | ICSID in Washington D.C. [member] |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |
Nationalization of subsidiaries, compensation award not including pre-award interest | $ 137.0 |  |  |  |  |  |
Nationalization of subsidiaries, pre-award interest | 76.0 |  |  |  |  |  |
Nationalization of subsidiaries, reimbursement of legal fees and administrative costs | $ 3.3 |  |  |  |  |  |
Nationalization of subsidiaries, interest rate basis spread | LIBOR |  |  |  |  |  |
Nationalization of subsidiaries, basis spread on variable rate | 4.00% |  |  |  |  |  |
Tavsa and Comsigua [member] | TALTA—TRADING E MARKETING SOCIEDADE UNIPESSOAL LDA. [member] | VENEZUELA | Federal court in District of Columbia [member] |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |
Nationalization of subsidiaries, compensation award including including principal and post-award interest |  |  |  |  | $ 276.9 |  |
Nationalization of subsidiaries, compensation award including principal, post-award interest and post-judgment interest |  |  |  | $ 280.7 |  |  |

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the interest receivable associated with the nationalization of subsidiaries. + References No definition available. + Details
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- Definition The amount collected as compensation for the nationalization of subsidiaries. + References No definition available. + Details
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- Definition The amount awarded, including pre-award interest and legal fees, as compensation for the nationalization of subsidiaries. + References No definition available. + Details
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- Definition The amount awarded, including principal and post-award interest, as compensation for the nationalization of subsidiaries. + References No definition available. + Details
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- Definition The amount awarded, including pre-award interest and legal fees, as compensation for the nationalization of subsidiaries. + References No definition available. + Details
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- Definition The amount awarded, not including pre-award interest, as compensation for the nationalization of subsidiaries. + References No definition available. + Details
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- Definition The basis (reference rate) used for calculation of the interest rate on compensation for the nationalization of subsidiaries. + References No definition available. + Details
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- Definition The amount of net gain on transfer of compensation for the nationalization of subsidiaries. + References No definition available. + Details
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