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30 Equity (Details 1) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Equity valuation adjustments, beginning | R$ 785,610 | R$ 895,601 | R$ 998,466
Adjustments to financial assets available for sale |  |  |
Financial investments |  |  | 3
Taxes on adjustments |  |  | (1)
Equity interest investments |  |  | 26,135
Taxes on adjustments |  |  | (8,887)
Adjustments related to actuarial liabilities |  |  |
Post employment benefits | (186,628) | (58,354) | (46,506)
Taxes on adjustments | 63,444 | 19,994 | 16,827
Realization of equity evaluation adjustment |  |  |
Deemed cost of fixed assets | (100,342) | (101,645) | (108,561)
Taxes on the adjustments | 34,116 | 34,559 | 36,911
Gains on Investments in equity investments |  |  | (28,650)
Taxes on adjustments |  |  | 9,741
Equity interest investments |  | (4,391) |
Attributed to non-controlling interest | (4,273) | (154) | 123
Equity valuation adjustments, ending | 591,927 | 785,610 | 895,601
Equity Valuation Adjustments [Member] |  |  |
Equity valuation adjustments, beginning | 790,668 | 857,754 | 929,404
Realization of equity evaluation adjustment |  |  |
Deemed cost of fixed assets | (100,342) | (101,645) | (108,561)
Taxes on the adjustments | 34,116 | 34,559 | 36,911
Equity valuation adjustments, ending | 724,442 | 790,668 | 857,754
Accumulated Other Comprehensive Income [Member] |  |  |
Equity valuation adjustments, beginning | (5,058) | 37,847 | 69,062
Adjustments to financial assets available for sale |  |  |
Financial investments |  |  | 3
Taxes on adjustments |  |  | (1)
Equity interest investments |  |  | 26,135
Taxes on adjustments |  |  | (8,887)
Adjustments related to actuarial liabilities |  |  |
Post employment benefits | (186,628) | (58,354) | (46,506)
Taxes on adjustments | 63,444 | 19,994 | 16,827
Realization of equity evaluation adjustment |  |  |
Gains on Investments in equity investments |  |  | (28,650)
Taxes on adjustments |  |  | 9,741
Equity interest investments |  | (4,391) |
Attributed to non-controlling interest | (4,273) | (154) | 123
Equity valuation adjustments, ending | R$ (132,515) | R$ (5,058) | R$ 37,847

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