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Intangible assets (Details Narrative)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
BRL (R$)
Disclosure of detailed information about intangible assets [line items]  
Term of amortization of concessions of intangible assets 30 years
2024  
Disclosure of detailed information about intangible assets [line items]  
Increased amortization if concessions were not renewed R$ 19,068
2025 to 2028  
Disclosure of detailed information about intangible assets [line items]  
Increased amortization if concessions were not renewed 66,000
2029 to 2033  
Disclosure of detailed information about intangible assets [line items]  
Increased amortization if concessions were not renewed 239,179
2034 to 2054  
Disclosure of detailed information about intangible assets [line items]  
Increased amortization if concessions were not renewed R$ 522,557