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13. FINANCIAL INSTRUMENTS (Details 9) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of detailed information about hedged items [line items] |  |  |
Movement | R$ 1,415,962 | R$ 50,987 | R$ (1,005,968)
Realization | (370,191) | (92,140) | R$ (77,444)
Foreign Subsidiaries |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |
Fair value of net investment hedge in foreign operations, beginning | (17,911) |  |
Movement | 21,852 |  |
Realization |  |  |
Fair value of net investment hedge in foreign operations, ending | 3,941 | (17,911) |
Foreign Subsidiaries | Net Investment hedge accounting |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |
Fair value of net investment hedge in foreign operations, beginning | (17,911) |  |
Movement | 21,852 |  |
Realization |  |  |
Fair value of net investment hedge in foreign operations, ending | R$ 3,941 | R$ (17,911) |

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