v3.26.1
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT - Outstanding assets and liabilities derivatives positions (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]    
Fair value in R$ R$ 230,312 R$ (6,567,720)
Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Fair value in R$ (851,427) (1,843,085)
Operational Hedge    
Disclosure of detailed information about financial instruments [line items]    
Fair value in R$ 1,004,060 (4,660,846)
Commodity Hedge    
Disclosure of detailed information about financial instruments [line items]    
Fair value in R$ 77,679 (63,789)
Zero cost collar (U.S.$ x R$) | Operational Hedge    
Disclosure of detailed information about financial instruments [line items]    
Notional amount 6,156,400 6,852,200
Fair value in R$ 979,705 (4,328,970)
Zero cost collar (U.S.$ x R$) | Commodity Hedge    
Disclosure of detailed information about financial instruments [line items]    
Notional amount 359,677 163,941
Fair value in R$ (33,279) 6,097
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
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 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 Pre-Fixed to US$ | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional amount
Fair value in R$
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 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 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 Pre-Fixed to US$ | Debt hedges    
Disclosure of detailed information about financial instruments [line items]    
Notional amount
Fair value in R$
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 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)