XML 173 R139.htm IDEA: XBRL DOCUMENT v3.25.1
Intangible assets (Details 1) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Intangible asset in service    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets, beginning R$ 11,201,945 R$ 10,033,251
Transfers from contract assets 2,303,950 1,888,949
Other transfers 15 3
Amortization of quotas - concession and authorization (732,351) (641,536)
Loss on disposal (75,644) (78,722)
Intangible assets, ending 12,697,915 11,201,945
Special liabilities in service    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets, beginning 2,884,618 2,775,424
Transfers from contract assets (200,428) (273,071)
Other transfers 0 0
Amortization of quotas - concession and authorization 175,489 163,877
Loss on disposal 0 0
Intangible assets, ending 2,909,557 2,884,618
Total    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets, beginning 8,317,327 7,257,827
Transfers from contract assets 2,103,522 1,615,878
Other transfers 15 3
Amortization of quotas - concession and authorization (556,862) (477,659)
Loss on disposal (75,644) (78,722)
Intangible assets, ending R$ 9,788,358 R$ 8,317,327