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Financial assets and liabilities - Summary of Sensitivity Analysis on Changes in Foreign Exchange Rates Impact on Profit Loss (Detail)
R$ in Thousands
 12 Months Ended
Dec. 31, 2021
BRL (R$)
Cash and cash equivalents [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Risk factor Currency fluctuation
Trade receivables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Risk factor Currency fluctuation
Trade payables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Risk factor Currency fluctuation
Derivative financial instruments [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Risk factor Currency fluctuation
Loans, borrowings and debentures [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Risk factor Currency fluctuation
Leases [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Risk factor Currency fluctuation
Consideration payable [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Risk factor Currency fluctuation
Probable [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss R$ 2,427,507
Probable [member] | Cash and cash equivalents [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 81,621
Probable [member] | Trade receivables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 76,502
Probable [member] | Trade payables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (1,414)
Probable [member] | Derivative financial instruments [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 2,457,838
Probable [member] | Loans, borrowings and debentures [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (424,712)
Probable [member] | Leases [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (2,321)
Probable [member] | Consideration payable [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 239,993
25% [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (1,916,743)
25% [member] | Cash and cash equivalents [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 1,054,926
25% [member] | Trade receivables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 100,347
25% [member] | Trade payables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (926)
25% [member] | Derivative financial instruments [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 3,676,786
25% [member] | Loans, borrowings and debentures [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (7,017,875)
25% [member] | Leases [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (29,992)
25% [member] | Consideration payable [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 299,991
50% [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (4,088,475)
50% [member] | Cash and cash equivalents [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 2,028,231
50% [member] | Trade receivables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 124,191
50% [member] | Trade payables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (438)
50% [member] | Derivative financial instruments [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 6,946,953
50% [member] | Loans, borrowings and debentures [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (13,489,738)
50% [member] | Leases [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (57,663)
50% [member] | Consideration payable [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 359,989
-25% [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 2,424,719
-25% [member] | Cash and cash equivalents [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (891,684)
-25% [member] | Trade receivables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 52,658
-25% [member] | Trade payables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (1,902)
-25% [member] | Derivative financial instruments [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (2,863,548)
-25% [member] | Loans, borrowings and debentures [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 5,925,849
-25% [member] | Leases [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 23,351
-25% [member] | Consideration payable [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 179,995
-50% [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 4,598,451
-50% [member] | Cash and cash equivalents [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (1,864,989)
-50% [member] | Trade receivables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 28,813
-50% [member] | Trade payables [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (2,389)
-50% [member] | Derivative financial instruments [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss (6,133,715)
-50% [member] | Loans, borrowings and debentures [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 12,397,712
-50% [member] | Leases [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss 53,022
-50% [member] | Consideration payable [member]  
Disclosure foreign currency sensitivity analysis impact on profit loss [line items]  
Changes in foreign exchange rates impact on profit loss R$ 119,997