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Schedule of transferred to intangible assets the costs of loans and financings linked to working in progress (Details) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Loans Financing And Debentures      
Costs of loans and financing R$ 1,162 R$ 1,211 R$ 1,250
Financing costs on intangible assets and contract assets (1) (Notes 17 and 21) 15 33 23
Net effect in Profit or loss R$ 1,147 R$ 1,178 R$ 1,227