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28. EQUITY AND REMUNERATION TO SHAREHOLDERS (Details 7) - BRL (R$) R$ / shares in Units, R$ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of Dividends [line items] |  |  |  |
Percentage applied to the nominal value of the preferred shares | 6.00% |  | 6.00% |
Equity | R$ 15,891 | R$ 15,939 | R$ 14,330 | R$ 12,934
Net income for the year | 3,127 | 1,700 | 1,001 |
Unrealized profit reserve | 835 | 835 |  |
Withholding income tax on Interest on equity | 35 | 17 |  |
Minimum Dividend under the by-laws including income tax on interest on equity | 764 | 867 | 500 |
Dividends recorded, as specified in the by-laws Interest on Equity | 400 | 210 |  |
Ordinary dividends | 364 | 657 | 500 |
Dividends and interest on equity | 764 | R$ 867 | R$ 500 |
Total dividends for the common shares | R$ 364 |  |  |
Mandatory dividends (including withholding income tax on Interest on Equity) | R$ 0.59 | R$ 0.52 | R$ 0.34 |
Dividend Distribution [member] |  |  |  |
Disclosure of Dividends [line items] |  |  |  |
Equity | R$ 15,887 | R$ 14,579 | R$ 14,326 |
Net income for the year | R$ 3,127 | R$ 1,700 | 1,001 |
Preferred Shares [Member] |  |  |  |
Disclosure of Dividends [line items] |  |  |  |
Percentage applied to the nominal value of the preferred shares | 10.00% | 10.00% |  |
Percentage applied to the portion of Equity represented by the preferred shares | 3.00% | 3.00% |  |
Amount of the dividends by the second payment criterion | R$ 317 |  |  |
Minimum Dividends required by the Bylaws for the preferred shares | 486 |  |  |
Mandatory dividends - 50% of Net income | 1,564 |  |  |
Preferred Shares [Member] | Dividend Distribution [member] |  |  |  |
Disclosure of Dividends [line items] |  |  |  |
Nominal value of the preferred shares | 4,856 | R$ 4,856 | 4,191 |
Nominal value of the preferred shares to be capitalized |  |  | 665 |
Preferred shares | R$ 4,856 | R$ 4,856 | R$ 4,856 |
Percentage applied to the nominal value of the preferred shares | 10.00% | 10.00% | 10.00% |
Amount of the dividends by the first payment criterion | R$ 486 | R$ 486 | R$ 486 |
Preferred shares as a percentage of Equity (net of shares held in Treasury) | 66.56% | 66.56% | 66.58% |
Equity | R$ 10,574 | R$ 9,704 | R$ 9,538 |
Percentage applied to the portion of Equity represented by the preferred shares | 3.00% | 3.00% | 3.00% |
Amount of the dividends by the second payment criterion | R$ 371 | R$ 291 | R$ 286 |
Minimum Dividends required by the Bylaws for the preferred shares | 486 | 486 | 486 |
Mandatory dividends - 50% of Net income | 1,564 | 850 | 500 |
Preferred Shares [Member] |  |  |  |
Disclosure of Dividends [line items] |  |  |  |
Total dividends for the common shares | R$ 577 | R$ 509 | R$ 486 |
Minimum dividends required by the by-laws for the preferred shares | R$ 0.50 | R$ 0.50 | R$ 0.50 |
Dividends proposed: Common (ON) shares | 0.52 | 0.59 | 0.03 |
Dividends proposed: Preferred (PN) shares | R$ 0.52 | R$ 0.59 | R$ 0.5 |
Common Shares [Member] |  |  |  |
Disclosure of Dividends [line items] |  |  |  |
Total dividends for the common shares | R$ 255 | R$ 290 | R$ 14 |
Dividends proposed: Common (ON) shares | R$ 0.52 | R$ 0.59 | R$ 0.03 |
Dividends proposed: Preferred (PN) shares | R$ 0.52 | R$ 0.59 | R$ 0.5 |

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