v3.26.1
Financial instruments and risk management - Liquidity risk management (Details) - Liquidity risk [member] - BRL (R$)
R$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities R$ 111,296,497 R$ 117,843,727
Financial Liabilities, Undiscounted Cash Flows 165,924,401 170,400,861
2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 14,010,035 16,194,968
2027    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 13,068,560 19,091,837
Later than two years and not later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 70,095,684 53,481,732
Later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 68,750,122 81,632,324
Trade accounts payable    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 4,981,256 5,141,386
Financial Liabilities, Undiscounted Cash Flows 4,981,256 5,141,386
Trade accounts payable | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 4,981,256 5,141,386
Trade accounts payable | Later than two years and not later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows  
Loans, financing and debentures    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 90,735,617 94,801,257
Financial Liabilities, Undiscounted Cash Flows 134,683,728 136,586,565
Loans, financing and debentures | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 6,123,048 5,690,098
Loans, financing and debentures | 2027    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 10,714,381 16,894,643
Loans, financing and debentures | Later than two years and not later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 62,694,071 46,428,491
Loans, financing and debentures | Later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 55,152,228 67,573,333
Leases (1)    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 6,763,902 6,929,890
Financial Liabilities, Undiscounted Cash Flows 11,893,716 13,281,230
Leases (1) | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 1,677,577 2,761,632
Leases (1) | 2027    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 1,223,232 1,235,951
Leases (1) | Later than two years and not later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 3,114,107 3,161,325
Leases (1) | Later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 5,878,800 6,122,322
Derivative Liabilities    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 8,581,757 9,341,349
Financial Liabilities, Undiscounted Cash Flows 14,131,736 13,741,567
Derivative Liabilities | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 1,159,582 1,139,273
Derivative Liabilities | 2027    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 1,040,511 849,920
Derivative Liabilities | Later than two years and not later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 4,212,549 3,815,705
Derivative Liabilities | Later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 7,719,094 7,936,669
Dividends payable    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 12,855 1,393,121
Financial Liabilities, Undiscounted Cash Flows 12,855 1,393,121
Dividends payable | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 12,855 1,393,121
Other liabilities    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 221,110 236,724
Financial Liabilities, Undiscounted Cash Flows 221,110 256,992
Other liabilities | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 55,717 69,458
Other liabilities | 2027    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 90,436 111,323
Other liabilities | Later than two years and not later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows R$ 74,957 R$ 76,211