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32. ASSETS AS HELD FOR SALE AND DISCONTINUED OPERATIONS (Details) - Continuing and discontinued operations [member] - BRL (R$)
R$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Consolidated and Parent company - Statements of financial position    
Assets held for sale - investment in an affiliate R$ 1,258 R$ 1,258
Consolidated and Parent company - Statements of income    
Loss for write-down of non-current assets held for sale arising from continuing operations, before taxes   73
Net income after taxes - continuing operations   73
Profit for write-down of non-current assets held for sale arising from continuing operations, before taxes   309
Deferred taxes arising from non-current assets held for sale, recognized in continuing operations   (85)
Net income after taxes - discontinued operations   R$ 224