9. RECOVERABLE TAXES (Details 1) - PIS and COFINS ("Federal Taxes to Social Fund Programs") [Member] R$ in Thousands	Dec. 31, 2020 BRL (R$)
DisclosureOfRecoverableTaxesLineItems [Line Items]
2021	R$ 479,225
2022	328,000
2023	537,000
2024	672,000
2025	377,847
2026	424,319
Social integration plan and contribution for social security financing	R$ 2,818,391

Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

No definition available.

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Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

No definition available.

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Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

No definition available.

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

No definition available.

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

No definition available.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

No definition available.

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No definition available.

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Social integration plan and contribution for social security financing.

No definition available.

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