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COMPANY'S OPERATIONS - Effects arising from COVID 19 (Details) - Covid 19
R$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2021
BRL (R$)
Dec. 31, 2020
BRL (R$)
item
COMPANY'S OPERATIONS      
Number of respirators acquired for donation     159
Number of hospital masks acquired for donation     1,000,000
Disbursement to support production of respirators | R$     R$ 9,584
Duration of payroll maintenance of service providers 90 days    
Percentage of payroll of service providers maintained 100.00%    
Aggregate disbursements made for social actions | R$   R$ 25,285 48,590
State of Maranhao      
COMPANY'S OPERATIONS      
Donations, Imperatriz Temporary Hospital | R$     R$ 2,798
Number of cubic meters of oxygen provided | m³     85,782
State of Amazonas      
COMPANY'S OPERATIONS      
Number of cubic meters of oxygen provided | m³     280,000
State of Espirito Santo      
COMPANY'S OPERATIONS      
Number of cubic meters of oxygen provided | m³     1,300
Rural and Territorial Development Program      
COMPANY'S OPERATIONS      
Number of communities supported     38
Number of states supported     5
Number of masks to be provided     125,000