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Intangible assets (Details 4) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
IfrsStatementLineItems [Line Items] |  |  |
Intangible assets, beginning | R$ 10,277,727 |  |
Reclassification | (10,338) |  | R$ 111
Intangible assets, ending | 11,170,089 | R$ 10,277,727 |
Other In Service [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Intangible assets, beginning | 12,848 | 22,242 |
Acquisitions | 37 |  |
Transfers from property, plant and equipment | 4,570 | (9,795) |
Capitalizations for intangible in service | 14,555 | 5,561 |
Amortization of quotas - concession and authorization | (8,040) | (5,160) |
Loss on disposal |  |  |
Business combination effects | 4 |  |
Reclassification | (34) |  |
Intangible assets, ending | 23,940 | 12,848 | 22,242
Other In Progress [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Intangible assets, beginning | 28,330 | 27,131 |
Acquisitions | 13,351 | 8,319 |
Transfers from property, plant and equipment |  |  |
Capitalizations for intangible in service | (14,555) | (5,561) |
Amortization of quotas - concession and authorization |  |  |
Loss on disposal | (6) | (1,559) |
Business combination effects |  |  |
Reclassification |  |  |
Intangible assets, ending | 27,120 | 28,330 | 27,131
Other [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Intangible assets, beginning | 41,178 | 49,373 |
Acquisitions | 13,388 | 8,319 |
Transfers from property, plant and equipment | 4,570 | (9,795) |
Capitalizations for intangible in service |  |  |
Amortization of quotas - concession and authorization | (8,040) | (5,160) |
Loss on disposal | (6) | (1,559) |
Business combination effects | 4 |  |
Reclassification | (34) |  |
Intangible assets, ending | R$ 51,060 | R$ 41,178 | R$ 49,373

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