v3.25.4
Financial instruments - Outstanding derivatives by contract type, including embedded derivatives (Details)
R$ in Thousands, $ in Thousands
Dec. 31, 2025
BRL (R$)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
BRL (R$)
Dec. 31, 2024
USD ($)
Disclosure of detailed information about financial instruments [line items]        
Fair value in R$ R$ 230,312   R$ (6,567,720)  
Derivative financial instruments 1,556,978   1,006,427  
Derivative financial instruments 8,014,683   2,880,673  
Current derivative financial liabilities (1,205,029)   (2,760,273)  
Non-current derivative financial liabilities (8,136,320)   (7,694,547)  
Operational Hedge        
Disclosure of detailed information about financial instruments [line items]        
Fair value in R$ 1,004,060   (4,660,846)  
Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Fair value in R$ (851,427)   (1,843,085)  
Commodity Hedge        
Disclosure of detailed information about financial instruments [line items]        
Fair value in R$ 77,679   (63,789)  
NDF (R$ x US$) | Operational Hedge        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 90,000   581,000  
Fair value in R$ 24,355   (331,876)  
Swap US$ e US-CPI (1) | Commodity Hedge        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 153,342   138,439  
Fair value in R$ 112,058   (80,759)  
Swap VLSFO/Brent | Commodity Hedge        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 1,217   39,706  
Fair value in R$ (1,100)   10,873  
Interest rate swap contract [member] | Zero Cost Collar | Operational Hedge        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   $ 6,156,400   $ 6,852,200
Fair value in R$ 979,705   (4,328,970)  
Interest rate swap contract [member] | Zero Cost Collar | Commodity Hedge        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   359,677   163,941
Fair value in R$ (33,279)   6,097  
Interest rate swap contract [member] | NDF (R$ x US$) | Operational Hedge        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   90,000   581,000
Fair value in R$ 24,355   (331,876)  
Interest rate swap contract [member] | Swap SOFR x Fixed (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   2,400,260   1,973,705
Fair value in R$ 92,248   394,129  
Interest rate swap contract [member] | Swap IPCA x CDI (notional in Brazilian Reais) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   10,466,620   8,128,395
Fair value in R$ (660,777)   (825,899)  
Interest rate swap contract [member] | Swap CNH to Fixed (CNH) [Member] | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $      
Fair value in R$     (6,440)  
Interest rate swap contract [member] | Swap CDI x Fixed (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   1,635,783   909,612
Fair value in R$ (161,443)   (776,261)  
Interest rate swap contract [member] | Swap CDI x SOFR (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   660,171   610,171
Fair value in R$ (165,105)   (590,764)  
Interest rate swap contract [member] | Swap SOFR x SOFR (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $     150,961
Fair value in R$   (37,850)  
Interest rate swap contract [member] | Swap US$ e US-CPI (1) | Commodity Hedge        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   153,342   138,439
Fair value in R$ 112,058   (80,759)  
Interest rate swap contract [member] | Swap VLSFO/Brent | Commodity Hedge        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   1,217   39,706
Fair value in R$ (1,100)   10,873  
Interest rate swap contract [member] | Swap CNY to Fixed | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   362,736    
Fair value in R$ 35,288   (6,440)  
Interest rate swap contract [member] | Pre-fixed Swap to CDI US$ | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount | $   $ 2,400,000  
Fair value in R$ 8,362    
Derivative Assets | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Fair value in R$ 7,554,745   3,594,291  
Derivative Assets | Swap SOFR x Fixed (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 2,400,260   1,973,705  
Fair value in R$ 492,458   424,824  
Derivative Assets | Swap IPCA x CDI (notional in Brazilian Reais) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 11,059,169   8,382,699  
Fair value in R$ 1,549,779   927,586  
Derivative Assets | Swap CDI x Fixed (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 8,788,534   4,748,394  
Fair value in R$ 2,525,172   1,482,759  
Derivative Assets | Swap CDI x SOFR (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 3,399,600   3,117,625  
Fair value in R$ 915,431   754,173  
Derivative Assets | Swap SOFR x SOFR (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount     150,961  
Fair value in R$     4,949  
Derivative Assets | Swap CNY to Fixed | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 2,600,000      
Fair value in R$ 509,116      
Derivative Assets | Pre-fixed Swap to CDI US$ | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 2,400,000      
Fair value in R$ 1,562,789      
Derivative Liabilities | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Fair value in R$ (8,406,172)   (5,437,376)  
Derivative Liabilities | Swap SOFR x Fixed (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 2,400,260   1,973,705  
Fair value in R$ (400,210)   (30,695)  
Derivative Liabilities | Swap IPCA x CDI (notional in Brazilian Reais) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 10,466,620   8,128,395  
Fair value in R$ (2,210,556)   (1,753,485)  
Derivative Liabilities | Swap CDI x Fixed (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 1,635,783   909,612  
Fair value in R$ (2,686,614)   (2,259,020)  
Derivative Liabilities | Swap CDI x SOFR (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 660,171   610,171  
Fair value in R$ (1,080,537)   (1,344,937)  
Derivative Liabilities | Swap SOFR x SOFR (US$) | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount   150,961  
Fair value in R$   (42,799)  
Derivative Liabilities | Swap CNY to Fixed | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 362,736      
Fair value in R$ (473,828)   R$ (6,440)  
Derivative Liabilities | Pre-fixed Swap to CDI US$ | Debt hedges        
Disclosure of detailed information about financial instruments [line items]        
Notional amount 2,400,000      
Fair value in R$ R$ (1,554,427)