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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, 2021
BRL (R$)
item
state
Jun. 30, 2020
Dec. 31, 2020
BRL (R$)
COMPANY'S OPERATIONS      
Number of respirators acquired for donation 159    
Number of hospital masks acquired for donation 1,000,000    
Disbursement for delivery of respirator | R$     R$ 9,584
Days for maintenance of 100% payroll   90 days  
Donations, Imperatriz Temporary Hospital | R$ R$ 2,798    
Period for which production was temporarily stopped   30 days  
State of Amazonas      
COMPANY'S OPERATIONS      
Number of cubic meters of oxygen provided | m³ 280,000    
State of Maranhao      
COMPANY'S OPERATIONS      
Number of cubic meters of oxygen provided | m³ 65,696    
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 | state 5    
Social Program      
COMPANY'S OPERATIONS      
Number of states supported | state 5    
Number of masks to be provided 125,000    
Disbursement for social actions | R$ R$ 23,696