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1 Operations (Details Narrative) - BRL (R$) R$ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 02, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2019
Disclosure of joint ventures [line items] |  |  |  |  |
Percentage interest in shares of acquired |  | 100.00% |  |  |
Net operating revenue increased | R$ 10,792 |  |  |  |
Net operating revenue | 16,255,066 | R$ 105,184 |  |  |
Net income increased | 7,682 |  |  |  |
Net income | R$ 2,070,551 | R$ 2,062,869 | R$ 1,444,004 | R$ 1,118,255 |
Description of business combination |  | The business combination occurred with the payment of R$ 133,739, corresponding to 100% of SPE Uirapuru shares, of which R$ 142 was paid in December 2018 and R$ 133,597 during the first half of 2019. Considering the cash acquired from the subsidiary, in the amount of R$ 9,803, we have a net cash effect for the Company of R$ 123,936 (R$ 142 in 2018 and R$ 123,794 in 2019). |  |  |
SPE Uirapuru Transmissora de Energia S.A. [Member] | Share Purchase and Sale Agreement [Member] |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |
Percentage interest in shares of acquired |  |  |  |  | 100.00%

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