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INTANGIBLE ASSETS - Movements (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   0.00%  
Opening balance R$ 79,980,581 R$ 4,992,176  
Effects of deconsolidation   (79,193)  
Acquisition of investee control 1,266,650 1,130,030  
Additions 288,876 75,100,651  
Write-offs (57,754) 3,345  
Amortizations (1,638,807) (1,088,065)  
Transfers assets held for sale (1,675)    
Transfers 28,370 (78,363)  
Closing balance 79,866,241 79,980,581 R$ 4,992,176
Cost      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 82,334,412 6,178,062  
Closing balance 83,867,468 82,334,412 6,178,062
Accumulated Depreciation and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (2,353,831) (1,185,886)  
Closing balance (4,001,227) (2,353,831) (1,185,886)
Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (152,988) (71,451)  
Additions   (100,153)  
Write-offs 76,378 17,257  
Transfers assets held for sale 460    
Transfers (1,359) 1,359  
Closing balance (77,509) R$ (152,988) R$ (71,451)
Concession Rights      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   3.30% 2.97%
Opening balance 79,149,328 R$ 4,329,562  
Acquisition of investee control 1,188,150 880,584  
Additions 938 75,021,253  
Write-offs (59,325) (1,156)  
Amortizations (1,584,994) (1,021,931)  
Transfers 31,466 (58,984)  
Closing balance 78,725,563 79,149,328 R$ 4,329,562
Concession Rights | Cost      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 80,725,923 4,858,374  
Closing balance 81,960,541 80,725,923 4,858,374
Concession Rights | Accumulated Depreciation and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (1,576,595) (528,812)  
Closing balance (3,234,978) R$ (1,576,595) R$ (528,812)
Software      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   20.00% 20.00%
Opening balance 112,533 R$ 120,097  
Effects of deconsolidation   (18,790)  
Acquisition of investee control 231 463  
Additions 1,225 7,183  
Write-offs (618)    
Amortizations (17,733) (18,198)  
Transfers assets held for sale (295)    
Transfers 174,650 21,778  
Closing balance 269,993 112,533 R$ 120,097
Software | Cost      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 473,331 585,584  
Closing balance 633,504 473,331 585,584
Software | Accumulated Depreciation and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (360,798) (465,487)  
Closing balance (363,511) R$ (360,798) R$ (465,487)
Use of the public property      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   3.30% 1.91%
Opening balance 217,804 R$ 88,068  
Acquisition of investee control 4,635 134,741  
Additions 995    
Amortizations (8,085) (5,005)  
Closing balance 215,349 217,804 R$ 88,068
Use of the public property | Cost      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 306,888 107,547  
Closing balance 314,044 306,888 107,547
Use of the public property | Accumulated Depreciation and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (89,084) (19,479)  
Closing balance (98,695) R$ (89,084) (19,479)
Intangible assets in progress      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   0.00%  
Opening balance 505,533 R$ 456,897  
Effects of deconsolidation   (60,403)  
Acquisition of investee control 867 4,448  
Additions 233,689 161,642  
Write-offs (179) (5,002)  
Transfers assets held for sale (2,173)    
Transfers (175,177) (52,049)  
Closing balance 562,560 505,533 456,897
Intangible assets in progress | Cost      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 505,533 456,897  
Closing balance 562,560 R$ 505,533 R$ 456,897
Others      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Average Amortization Rate, Intangible assets other than goodwill   3.40% 4.82%
Opening balance 148,371 R$ 69,003  
Acquisition of investee control 72,767 109,794  
Additions 52,029 10,726  
Write-offs (74,010) (7,754)  
Amortizations (27,995) (42,931)  
Transfers assets held for sale 333    
Transfers (1,210) 9,533  
Closing balance 170,285 148,371 R$ 69,003
Others | Cost      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance 322,737 169,660  
Closing balance 396,819 322,737 169,660
Others | Accumulated Depreciation and Impairment      
Disclosure of reconciliation of changes in intangible assets and goodwill      
Opening balance (174,366) (100,657)  
Closing balance R$ (226,534) R$ (174,366) R$ (100,657)