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30 Equity (Details 2) - BRL (R$) R$ / shares in Units, R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Net income for the year | R$ 3,904,202 |  |
Legal Reserve (5%) | (195,210) |  |
Realization of equity evaluation adjustment | 59,630 |  |
Calculation basis for minimum mandatory dividends | 3,768,622 |  |
Minimum mandatory dividend | 942,156 |  |
Interest on own capital - gross value | 807,500 |  |
Tax on interest on own capital | (76,401) |  |
Interest on own capital, net | 731,099 |  |
Complement to reach the mandatory minimum | 211,057 |  |
Proposed additional dividend from non-capitalized earnings reserve (30.4.1) | 1,507,449 |  |
Total proposed distribution, net | 2,435,463 |  |
Total proposed distribution | R$ 2,526,006 |  |
Gross value of dividends per share: ordinary shares | R$ 0.88128 | R$ 0.22423 | R$ 0.13195
Gross amount of dividends per class of shares: ordinary shares | R$ 1,278,126 |  |
Restated [Member] |  |  |
Net income for the year |  | R$ 1,989,946 | R$ 1,407,063
Legal Reserve (5%) |  | (99,497) | (70,353)
Realization of equity evaluation adjustment |  | 66,226 | 67,086
Calculation basis for minimum mandatory dividends |  | 1,956,675 | 1,403,796
Minimum mandatory dividend |  | 489,169 | 350,949
Interest on own capital - gross value |  | 643,000 | 280,000
Tax on interest on own capital |  | (56,584) | (27,593)
Interest on own capital, net |  | 586,416 | 252,407
Complement to reach the mandatory minimum |  |  | 98,542
Proposed additional dividend from non-capitalized earnings reserve (30.4.1) |  |  |
Total proposed distribution, net |  | 586,416 | 350,949
Total proposed distribution |  | 643,000 | R$ 378,542
Interest on own capital, net, in advance, endorsed by CAD |  | R$ 97,247 |
Gross value of dividends per share: ordinary shares |  | R$ 0.22423 | R$ 0.13195
Gross amount of dividends per class of shares: ordinary shares |  | R$ 325,210 | R$ 191,369
Class "A" preferred [member] |  |  |
Gross value of dividends per share, preferred | R$ 1.27172 |  |
Gross amount of dividends per class of shares, preferred | R$ 4,155 |  |
Class "A" preferred [member] | Restated [Member] |  |  |
Gross value of dividends per share, preferred |  | R$ 0.39466 | R$ 0.28905
Gross amount of dividends per class of shares, preferred |  | R$ 1,291 | R$ 950
Class "B" preferred [member] |  |  |
Gross value of dividends per share, preferred | R$ 0.96941 |  |
Gross amount of dividends per class of shares, preferred | R$ 1,243,725 |  |
Class "B" preferred [member] | Restated [Member] |  |  |
Gross value of dividends per share, preferred |  | R$ 0.24669 | R$ 0.14515
Gross amount of dividends per class of shares, preferred |  | R$ 316,499 | R$ 186,223

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