v3.26.1
INTANGIBLE ASSETS (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill  
Opening balance R$ 78,173,273 R$ 79,866,241  
Business combination 452,938    
Additions 603,753 449,060  
Write-offs/Reversals (9,203) (71,462)  
Amortizations (2,424,266) (2,027,350)  
Transfers for Assets Held for Sale   (51,804)  
Transfers (170,789) 8,588  
Closing balance 76,625,706 78,173,273 R$ 79,866,241
Costs      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 84,180,396 83,867,468  
Closing balance 84,829,698 84,180,396 83,867,468
Accumulated Amortization and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (6,007,123) (4,001,227)  
Closing balance (8,203,993) R$ (6,007,123) R$ (4,001,227)
Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   0.00% 0.00%
Opening balance (36,576) R$ (43,654)  
Business combination 0    
Additions 0 0  
Write-offs/Reversals 0 0  
Amortizations 0 0  
Transfers for Assets Held for Sale   0  
Transfers 0 7,078  
Closing balance (36,576) R$ (36,576) R$ (43,654)
Concession Rights      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   2.66% 2.42%
Opening balance 76,718,847 R$ 78,691,708  
Business combination 452,938    
Additions 24,576 0  
Write-offs/Reversals (9,203) (17,358)  
Amortizations (2,241,005) (1,934,243)  
Transfers for Assets Held for Sale   (35,533)  
Transfers (181,612) 14,273  
Closing balance 74,764,541 76,718,847 R$ 78,691,708
Concession Rights | Costs      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 81,916,771 81,960,541  
Closing balance 81,989,472 81,916,771 81,960,541
Concession Rights | Accumulated Amortization and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (5,197,924) (3,268,833)  
Closing balance (7,224,932) R$ (5,197,924) R$ (3,268,833)
Software      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   9.86% 6.54%
Opening balance 520,010 R$ 269,993  
Business combination 0    
Additions 12 3,601  
Write-offs/Reversals 0 (52,073)  
Amortizations (122,393) (49,655)  
Transfers for Assets Held for Sale   0  
Transfers 406,577 348,144  
Closing balance 804,206 520,010 R$ 269,993
Software | Costs      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 929,008 633,504  
Closing balance 1,328,544 929,008 633,504
Software | Accumulated Amortization and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (408,998) (363,511)  
Closing balance (524,338) R$ (408,998) R$ (363,511)
Use of the public property      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   1.60% 2.36%
Opening balance 197,264 R$ 215,349  
Business combination 0    
Additions 242 208  
Write-offs/Reversals 0 0  
Amortizations (7,208) (7,938)  
Transfers for Assets Held for Sale   (10,770)  
Transfers 0 415  
Closing balance 190,298 197,264 R$ 215,349
Use of the public property | Costs      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 298,841 314,044  
Closing balance 299,083 298,841 314,044
Use of the public property | Accumulated Amortization and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (101,577) (98,695)  
Closing balance (108,785) R$ (101,577) R$ (98,695)
Intangible assets in progress      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   0.00% 0.00%
Opening balance 609,906 R$ 562,560  
Business combination 0    
Additions 479,047 391,046  
Write-offs/Reversals 0 (1,232)  
Amortizations 0 0  
Transfers for Assets Held for Sale   0  
Transfers (394,714) (342,468)  
Closing balance 694,239 609,906 R$ 562,560
Intangible assets in progress | Costs      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 609,906 562,560  
Closing balance 694,239 609,906 562,560
Intangible assets in progress | Accumulated Amortization and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 0 0  
Closing balance 0 R$ 0 R$ 0
Others      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   1.28% 1.03%
Opening balance 163,822 R$ 170,285  
Business combination 0    
Additions 99,876 54,205  
Write-offs/Reversals 0 (799)  
Amortizations (53,660) (35,514)  
Transfers for Assets Held for Sale   (5,501)  
Transfers (1,040) (18,854)  
Closing balance 208,998 163,822 R$ 170,285
Others | Costs      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 425,870 396,819  
Closing balance 518,360 425,870 396,819
Others | Accumulated Amortization and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (262,048) (226,534)  
Closing balance R$ (309,362) R$ (262,048) R$ (226,534)