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32 Operating Costs and Expenses (Details Narrative) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Property Plant And Equipment Telecommunications Segment [Member]    
Disclosure of operating costs and expenses [line items]    
Write offs of fixed assets R$ 124,067  
Wind Farms Of The Brisa Complex [Member]    
Disclosure of operating costs and expenses [line items]    
Revenue related to the reimbursement R$ 97,664 R$ 72,068