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31. FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Details 1) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about financial instruments [line items] |  |
Options in shares | R$ 533 | R$ 480
SAAG [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Options in shares | 536 | 483
Sonda [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Options in shares | R$ (3) | R$ (3)

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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- Details
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