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40 Assets held for sale and discontinued operations (Details 2) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
AssetsHeldForSaleAndDiscontinuedOperationsLineItems [Line Items] |  |  |
Net income | R$ 75,578 |  |
Adjustments to reconcile net income | 3,577,975 |  |
Changes in assets and liabilities | 89,752 |  |
Taxes and charges paid | 636,420 |  |
Cash flows from operational activities | (3,940,844) |  |
Additions to property, plant and equipment and intangible assets | (226,325) |  |
Cash flows from investment activities | (1,667,571) |  |
Payment of loans and financing and lease | (248,863) |  |
Cash flows from financing activities | (1,715,113) |  |
Discontinued operations [member] |  |  |
AssetsHeldForSaleAndDiscontinuedOperationsLineItems [Line Items] |  |  |
Net income | 75,578 | R$ (108,393) | R$ 77,133
Adjustments to reconcile net income | 282,914 | 419,093 | 209,218
Changes in assets and liabilities | (16,958) | (38,821) | (11,478)
Taxes and charges paid | (73,050) | (51,464) | (83,488)
Cash flows from operational activities | 268,484 | 220,415 | 191,385
Additions to property, plant and equipment and intangible assets | (73,573) | (175,569) | (280,542)
Cash flows from investment activities | (73,573) | (175,569) | (280,542)
Issue of Debentures |  | 210,000 |
Payment of loans and financing and lease | (20,038) | (9,260) | (5,804)
Cash flows from financing activities | (20,038) | 200,740 | (5,804)
Changes in cash and cash equivalents | R$ 174,873 | R$ 245,586 | R$ (94,961)

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