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33. FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Details 1) - BRL (R$) R$ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about financial instruments [line items]
Options in shares	R$ 480	R$ 415
Sonda [Member]
Disclosure of detailed information about financial instruments [line items]
Options in shares	3	4
SAAG [Member]
Disclosure of detailed information about financial instruments [line items]
Options in shares	R$ 483	R$ 419

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- Definition

Options in shares amount.

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No definition available.

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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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Namespace Prefix:
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Balance Type:
Period Type:

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- Details

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Namespace Prefix:
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Balance Type:
Period Type: