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CONSOLIDATED FINANCIAL STATEMENTS - Associate companies (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Interest in Associate companies |  |  |
Net income | R$ 2,326,382 | R$ (338,667) | R$ (2,885,929)
Total comprehensive income | 2,713,308 | (298,366) | (7,773,542)
Associate companies |  |  |
Interest in Associate companies |  |  |
Net income | 31,806 | 26,099 | 141,023
Total comprehensive income | R$ 31,806 | R$ 26,099 | R$ 141,023
Dona Francisca Energtica S.A. |  |  |
Interest in Associate companies |  |  |
Equity interest in associate companies (as a percent) | 51.82% | 51.82% | 51.82%
Corsa Controladora, S.A. de C.V. and subsidiaries |  |  |
Interest in Associate companies |  |  |
Equity interest in associate companies (as a percent) | 49.00% | 49.00% | 49.00%

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