v3.26.1
Suppliers (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
IfrsStatementLineItems [Line Items]    
Current portion R$ 5,138,780 R$ 4,986,912
Local Currency [Member]    
IfrsStatementLineItems [Line Items]    
Current portion 4,414,270 4,233,754
Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Current portion 724,510 753,158
Suppliers [Member]    
IfrsStatementLineItems [Line Items]    
Current portion 5,138,780 4,986,912
Trade Suppliers Related To Materials And Services 1 [Member] | Local Currency [Member]    
IfrsStatementLineItems [Line Items]    
Current portion 4,321,640 4,157,887
Trade Suppliers Related To Interconnection [Member] | Local Currency [Member]    
IfrsStatementLineItems [Line Items]    
Current portion 56,960 44,759
Trade Suppliers Related To Roaming [Member] | Local Currency [Member]    
IfrsStatementLineItems [Line Items]    
Current portion 6,391 4,667
Trade Suppliers Related To Roaming [Member] | Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Current portion 438,644 485,435
Trade Suppliers Related To Co Billing [Member] | Local Currency [Member]    
IfrsStatementLineItems [Line Items]    
Current portion 29,279 26,441
Trade Suppliers Related To Materials And Services [Member] | Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Current portion R$ 285,866 R$ 267,723