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Borrowings and financing (Details 5)
 12 Months Ended
Dec. 31, 2021
Adjusted EBITDA / Adjusted financial expenses [Member]  
IfrsStatementLineItems [Line Items]  
Restrictive ratios Equal to or higher than 2.80
Adjusted net debt / Adjusted EBITDA [Member]  
IfrsStatementLineItems [Line Items]  
Restrictive ratios Equal to or higher than 2.35
Adjusted total debt / Adjusted EBITDA [Member]  
IfrsStatementLineItems [Line Items]  
Restrictive ratios Equal to or lower than 3.80
Other onerous debt / Adjusted EBITDA [Member]  
IfrsStatementLineItems [Line Items]  
Restrictive ratios Equal to or lower than 3.50
Adjusted current ratio [Member]  
IfrsStatementLineItems [Line Items]  
Restrictive ratios Lower than 3.65
EBITDA / Paid financial expenses [Member]  
IfrsStatementLineItems [Line Items]  
Restrictive ratios Equal to or lower than 1.30
Net debt / Adjusted EBITDA [Member]  
IfrsStatementLineItems [Line Items]  
Restrictive ratios Higher than 1.00