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Financial instruments and risk management - TAP Bonds (Details)
€ in Thousands, R$ in Thousands
6 Months Ended 12 Months Ended
Mar. 14, 2016
EUR (€)
Sep. 20, 2016
Dec. 31, 2021
BRL (R$)
Dec. 31, 2020
BRL (R$)
Disclosure of detailed information about financial instruments [line items]        
Long-term investments | R$     R$ 906,719 R$ 854,462
TAP Bond        
Disclosure of detailed information about financial instruments [line items]        
Acquisition of TAP Bonds | € € 90,000      
Maturity term of convertible bonds 10 years      
Interest rate on convertible bonds   3.75% 7.50%