v3.25.1
Financial instruments - Outstanding assets and liabilities derivatives positions (Details) - BRL (R$)
R$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]    
Fair value in R$ R$ (2,999,118) R$ (6,567,720)
Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Fair value in R$ (1,449,747) (1,843,085)
Operational Hedge    
Disclosure of detailed information about financial instruments [line items]    
Fair value in R$ (1,555,503) (4,660,846)
Commodity Hedge    
Disclosure of detailed information about financial instruments [line items]    
Fair value in R$ 6,132 (63,789)
Zero cost collar (U.S.$ x R$) | Operational Hedge    
Disclosure of detailed information about financial instruments [line items]    
Notional value 7,264,700 6,852,200
Fair value in R$ (1,518,526) (4,328,970)
Zero cost collar (U.S.$ x R$) | Commodity Hedge    
Disclosure of detailed information about financial instruments [line items]    
Notional value 209,530 163,941
Fair value in R$ 25,512 6,097
NDF (R$ x US$) | Operational Hedge    
Disclosure of detailed information about financial instruments [line items]    
Notional value 185,000 581,000
Fair value in R$ (36,977) (331,876)
Swap US$ e US-CPI (1) | Commodity Hedge    
Disclosure of detailed information about financial instruments [line items]    
Notional value 138,182 138,439
Fair value in R$ (23,226) (80,759)
Swap VLSFO/Brent | Commodity Hedge    
Disclosure of detailed information about financial instruments [line items]    
Notional value 23,027 39,706
Fair value in R$ 3,846 10,873
Derivative Assets | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Fair value in R$ 3,497,526 3,594,291
Derivative Assets | Swap CDI x Fixed (US$) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 4,650,715 4,748,394
Fair value in R$ 1,441,090 1,482,759
Derivative Assets | Swap SOFR x Fixed (US$) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 1,687,593 1,973,705
Fair value in R$ 250,548 424,824
Derivative Assets | Swap IPCA x CDI (notional in Brazilian Reais) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 8,456,042 8,382,699
Fair value in R$ 900,125 927,586
Derivative Assets | Swap CDI x SOFR (US$) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 3,117,625 3,117,625
Fair value in R$ 874,462 754,173
Derivative Assets | Swap SOFR x SOFR (US$) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 150,961 150,961
Fair value in R$ 5,366 4,949
Derivative Assets | Swap CNH x Fixed (US$) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 1,200,000 1,200,000
Fair value in R$ 25,935  
Derivative Liabilities | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Fair value in R$ (4,947,273) (5,437,376)
Derivative Liabilities | Swap CDI x Fixed (US$) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 903,827 909,612
Fair value in R$ (2,011,586) (2,259,020)
Derivative Liabilities | Swap SOFR x Fixed (US$) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 1,687,593 1,973,705
Fair value in R$ (6,096) (30,695)
Derivative Liabilities | Swap IPCA x CDI (notional in Brazilian Reais) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 8,053,063 8,128,395
Fair value in R$ (1,664,574) (1,753,485)
Derivative Liabilities | Swap CDI x SOFR (US$) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 610,171 610,171
Fair value in R$ (1,205,540) (1,344,937)
Derivative Liabilities | Swap SOFR x SOFR (US$) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 150,961 150,961
Fair value in R$ (26,086) (42,799)
Derivative Liabilities | Swap CNH x Fixed (US$) | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional value 165,815  
Fair value in R$ R$ (33,391) R$ (6,440)