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7 Trade Accounts Receivable (Details Narrative) R$ in Thousands | 12 Months Ended
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Dec. 31, 2020 BRL (R$)
Disclosure of subsidiaries [line items] |
Total amount presented of controversial portion of colider HPP | R$ 119,665
Bottom Of Range [member] |
Disclosure of subsidiaries [line items] |
Discount rate for trade account receivables | 0.49%
Top Of Range [member] |
Disclosure of subsidiaries [line items] |
Discount rate for trade account receivables | 2.89%

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