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21. PROVISION FOR ENVIRONMENTAL LIABILITIES AND ASSET RETIREMMENT OBLIGATIONS (Tables) | 12 Months Ended
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Dec. 31, 2020
Provision For Environmental Liabilities And Asset Retirement Obligations |
Schedule of provision for environmental liabilities and asset retirement obligation | The balance of provisions for environmental liabilities and deactivation of assets can be shown as follows:
|  |  | Consolidated
| 12/31/2020 |  | 12/31/2019
Environmental liabilities | 192,830 |  | 192,270
Asset retirement obligations | 611,005 |  | 331,731
| 803,835 |  | 524,001

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- Definition Schedule disclosing information related to the summary of transactions with subsidiaries joint ventures associates exclusive funds and other related parties by company assets and liabilities . + References No definition available. + Details
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