v3.26.1
FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Liquidity risk (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Obligations of Law No. 14,182/2021    
Maturity analysis for managing liquidity risk    
Financial liabilities R$ 84,672,201 R$ 82,207,429
Loans, financing and debentures    
Maturity analysis for managing liquidity risk    
Financial liabilities 104,801,449 95,134,003
Suppliers    
Maturity analysis for managing liquidity risk    
Financial liabilities 3,926,626 2,764,288
RGR Returns    
Maturity analysis for managing liquidity risk    
Financial liabilities 695,705 932,250
Shareholders remuneration    
Maturity analysis for managing liquidity risk    
Financial liabilities 136,124 2,490,668
Leases    
Maturity analysis for managing liquidity risk    
Financial liabilities 298,857 122,882
Concessions payable - use of public property    
Maturity analysis for managing liquidity risk    
Financial liabilities 713,637 606,337
Reimbursement obligations    
Maturity analysis for managing liquidity risk    
Financial liabilities   70,803
Financial liabilities at amortised cost, category [member]    
Maturity analysis for managing liquidity risk    
Financial liabilities 195,244,599 184,328,660
Up to 1 year | Obligations of Law No. 14,182/2021    
Maturity analysis for managing liquidity risk    
Financial liabilities 3,738,498 2,953,184
Up to 1 year | Loans, financing and debentures    
Maturity analysis for managing liquidity risk    
Financial liabilities 13,204,167 13,769,529
Up to 1 year | Suppliers    
Maturity analysis for managing liquidity risk    
Financial liabilities 3,916,279 2,756,329
Up to 1 year | RGR Returns    
Maturity analysis for managing liquidity risk    
Financial liabilities 695,705 492,276
Up to 1 year | Shareholders remuneration    
Maturity analysis for managing liquidity risk    
Financial liabilities 136,124 2,490,668
Up to 1 year | Leases    
Maturity analysis for managing liquidity risk    
Financial liabilities 72,981 31,192
Up to 1 year | Concessions payable - use of public property    
Maturity analysis for managing liquidity risk    
Financial liabilities 55,518 51,046
Up to 1 year | Reimbursement obligations    
Maturity analysis for managing liquidity risk    
Financial liabilities   55,517
Up to 1 year | Financial liabilities at amortised cost, category [member]    
Maturity analysis for managing liquidity risk    
Financial liabilities 21,819,272 22,599,741
From 1 to 2 Years | Obligations of Law No. 14,182/2021    
Maturity analysis for managing liquidity risk    
Financial liabilities 6,364,054 3,439,353
From 1 to 2 Years | Loans, financing and debentures    
Maturity analysis for managing liquidity risk    
Financial liabilities 17,295,202 18,913,993
From 1 to 2 Years | Suppliers    
Maturity analysis for managing liquidity risk    
Financial liabilities 10,347 7,959
From 1 to 2 Years | RGR Returns    
Maturity analysis for managing liquidity risk    
Financial liabilities 0 439,974
From 1 to 2 Years | Shareholders remuneration    
Maturity analysis for managing liquidity risk    
Financial liabilities 0 0
From 1 to 2 Years | Leases    
Maturity analysis for managing liquidity risk    
Financial liabilities 45,856 20,183
From 1 to 2 Years | Concessions payable - use of public property    
Maturity analysis for managing liquidity risk    
Financial liabilities 110,695 131,764
From 1 to 2 Years | Reimbursement obligations    
Maturity analysis for managing liquidity risk    
Financial liabilities   15,286
From 1 to 2 Years | Financial liabilities at amortised cost, category [member]    
Maturity analysis for managing liquidity risk    
Financial liabilities 23,826,155 22,968,512
From 2 to 5 Years | Obligations of Law No. 14,182/2021    
Maturity analysis for managing liquidity risk    
Financial liabilities 13,458,478 12,906,745
From 2 to 5 Years | Loans, financing and debentures    
Maturity analysis for managing liquidity risk    
Financial liabilities 33,703,903 28,317,110
From 2 to 5 Years | Suppliers    
Maturity analysis for managing liquidity risk    
Financial liabilities 0 0
From 2 to 5 Years | RGR Returns    
Maturity analysis for managing liquidity risk    
Financial liabilities 0 0
From 2 to 5 Years | Shareholders remuneration    
Maturity analysis for managing liquidity risk    
Financial liabilities 0 0
From 2 to 5 Years | Leases    
Maturity analysis for managing liquidity risk    
Financial liabilities 114,854 29,536
From 2 to 5 Years | Concessions payable - use of public property    
Maturity analysis for managing liquidity risk    
Financial liabilities 200,143 140,671
From 2 to 5 Years | Reimbursement obligations    
Maturity analysis for managing liquidity risk    
Financial liabilities   0
From 2 to 5 Years | Financial liabilities at amortised cost, category [member]    
Maturity analysis for managing liquidity risk    
Financial liabilities 47,477,378 41,394,062
Over 5 Years | Obligations of Law No. 14,182/2021    
Maturity analysis for managing liquidity risk    
Financial liabilities 61,111,171 62,908,147
Over 5 Years | Loans, financing and debentures    
Maturity analysis for managing liquidity risk    
Financial liabilities 40,598,177 34,133,371
Over 5 Years | Suppliers    
Maturity analysis for managing liquidity risk    
Financial liabilities 0 0
Over 5 Years | RGR Returns    
Maturity analysis for managing liquidity risk    
Financial liabilities 0 0
Over 5 Years | Shareholders remuneration    
Maturity analysis for managing liquidity risk    
Financial liabilities 0 0
Over 5 Years | Leases    
Maturity analysis for managing liquidity risk    
Financial liabilities 65,166 41,971
Over 5 Years | Concessions payable - use of public property    
Maturity analysis for managing liquidity risk    
Financial liabilities 347,281 282,856
Over 5 Years | Reimbursement obligations    
Maturity analysis for managing liquidity risk    
Financial liabilities   0
Over 5 Years | Financial liabilities at amortised cost, category [member]    
Maturity analysis for managing liquidity risk    
Financial liabilities R$ 102,121,795 R$ 97,366,345