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10. INCOME AND SOCIAL CONTRIBUTION TAXES (Details) - BRL (R$) R$ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Disclosure of income and social contribution taxes [abstract] |  |
Income tax | R$ 698 | R$ 608
Social contribution tax | 247 | 241
Income and social contribution tax credits | 945 | 849
Current | 598 | 621
Non-current | 347 | 228
Current |  |
Income tax | 108 | 99
Social contribution tax | 32 | 35
Total | R$ 140 | R$ 134

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