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7 Trade Accounts Receivable (Details Narrative) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of subsidiaries [line items] |  |
Trade receivables | R$ 3,182,567 | R$ 3,107,006
Bottom Of Range [Member] |  |
Disclosure of subsidiaries [line items] |  |
Discount rate for trade account receivables | 0.26% |
Top Of Range [Member] |  |
Disclosure of subsidiaries [line items] |  |
Discount rate for trade account receivables | 2.81% |
CCEE [Member] |  |
Disclosure of subsidiaries [line items] |  |
Trade receivables | R$ 119,665 |

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