v3.26.1
Financial instruments and risk management - Liquidity risk management (Details) - Liquidity risk [member] - BRL (R$)
R$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities R$ 113,762,455 R$ 117,843,727
Financial Liabilities, Undiscounted Cash Flows 166,584,321 170,400,861
2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 16,884,202 16,194,968
2027    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 12,657,966 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 65,809,946 53,481,732
Later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 71,232,207 81,632,324
Trade accounts payable    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 5,585,058 5,141,386
Financial Liabilities, Undiscounted Cash Flows 5,585,058 5,141,386
Trade accounts payable | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 5,585,058 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 92,706,122 94,801,257
Financial Liabilities, Undiscounted Cash Flows 134,223,634 136,586,565
Loans, financing and debentures | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 7,906,339 5,690,098
Loans, financing and debentures | 2027    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 10,168,812 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 58,381,990 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 57,766,493 67,573,333
Leases (1)    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 6,707,418 6,929,890
Financial Liabilities, Undiscounted Cash Flows 12,054,041 13,281,230
Leases (1) | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 2,043,989 2,761,632
Leases (1) | 2027    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 1,232,081 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 3,099,943 3,161,325
Leases (1) | Later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 5,678,028 6,122,322
Derivative Liabilities    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 8,438,336 9,341,349
Financial Liabilities, Undiscounted Cash Flows 14,377,544 13,741,567
Derivative Liabilities | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 1,200,050 1,139,273
Derivative Liabilities | 2027    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 1,094,962 849,920
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 4,294,846 3,815,705
Derivative Liabilities | Later than five years [member]    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 7,787,686 7,936,669
Dividends payable    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 7,352 1,393,121
Financial Liabilities, Undiscounted Cash Flows 7,352 1,393,121
Dividends payable | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 7,352 1,393,121
Other liabilities    
Disclosure of detailed information about financial instruments [line items]    
Financial liabilities 318,169 236,724
Financial Liabilities, Undiscounted Cash Flows 336,692 256,992
Other liabilities | 2026    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 141,414 69,458
Other liabilities | 2027    
Disclosure of detailed information about financial instruments [line items]    
Financial Liabilities, Undiscounted Cash Flows 162,111 111,323
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$ 33,167 R$ 76,211