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Basis of preparation of financial statements (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes and other explanatory information [abstract] |
Schedule of exchange rates used to translate its foreign operations |
Schedule of exchange rates used to translate its foreign operations |  |  |  |  |  |  |  |  |  |  |  |
|  | Closing rate |  | Average rate
|  | 2023 |  | 2022 |  | 2021 |  | 2023 |  | 2022 |  | 2021
US Dollar ("US$") |  | 4.8413 |  | 5.2177 |  | 5.5805 |  | 4.9954 |  | 5.1655 |  | 5.3956
Canadian dollar ("CAD") |  | 3.6522 |  | 3.8550 |  | 4.3882 |  | 3.7026 |  | 3.9705 |  | 4.3042
Euro ("EUR") |  | 5.3516 |  | 5.5694 |  | 6.3210 |  | 5.4023 |  | 5.4420 |  | 6.3784

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