v3.25.4
Equity (Details 6) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
EQUITY      
Equity at beginning of period R$ 69,799,495 R$ 69,627,320  
Equity attributable to owners of parent 68,721,743 69,729,582  
Non-controlling shareholders 280,983 69,913  
Equity at end of period 69,002,726 69,799,495  
Total      
EQUITY      
Equity at beginning of period 271,947 162,408  
Equity attributable to owners of parent 1,553,496 202,034 R$ 101,883
Non-controlling shareholders 280,983 69,913 60,525
Company 1,351,462 100,151  
Capital contributions in investees, Company 89,828 97,449  
Acquisitions through business combinations, Company 1,230,252    
Movements in equity, Company (85) (1,986)  
Movements in result, Company 31,467 4,688  
Merger of companies, Company 0    
Non-controlling shareholders 211,070 9,388  
Capital contributions in investees, Non-controlling shareholders 1,833 1,990  
Acquisitions through business combinations, Non-controlling shareholders 199,695    
Movements in equity, Non-controlling shareholders (95) (1,986)  
Movements in result, Non-controlling shareholders 9,637 9,384  
Merger of companies, Non-controlling shareholders 0    
Equity at end of period 1,834,479 271,947  
Telefnica IoT, Big Data e Tecnologia do Brasil S.A. ("IoTCo Brasil")      
EQUITY      
Equity at beginning of period 109,236 96,607  
Equity attributable to owners of parent 0 54,629 48,313
Non-controlling shareholders 0 54,607 48,294
Company (54,629) 6,316  
Movements in equity, Company   (2,001)  
Movements in result, Company 1,490 8,317  
Merger of companies, Company (56,119)    
Non-controlling shareholders (54,607) 6,313  
Movements in equity, Non-controlling shareholders 0 (2,000)  
Movements in result, Non-controlling shareholders 1,489 8,313  
Merger of companies, Non-controlling shareholders (56,096)    
Equity at end of period 0 109,236  
Vivo Ventures ("VV")      
EQUITY      
Equity at beginning of period 137,598 43,055  
Equity attributable to owners of parent 244,649 134,846 42,195
Non-controlling shareholders 4,993 2,752 860
Company 109,803 92,651  
Capital contributions in investees, Company 89,828 97,449  
Movements in equity, Company   0  
Movements in result, Company 19,975 (4,798)  
Non-controlling shareholders 2,241 1,892  
Capital contributions in investees, Non-controlling shareholders 1,833 1,990  
Movements in equity, Non-controlling shareholders   0  
Movements in result, Non-controlling shareholders 408 (98)  
Equity at end of period 249,642 137,598  
FiBrasil Infraestrutura e Fibra Otica S.A. ("FiBrasil")      
EQUITY      
Equity at beginning of period 0 0  
Equity attributable to owners of parent 1,233,653    
Non-controlling shareholders 200,829    
Company 1,233,653 0  
Acquisitions through business combinations, Company 1,230,252    
Movements in equity, Company 15    
Movements in result, Company 3,386    
Non-controlling shareholders 200,829 0  
Acquisitions through business combinations, Non-controlling shareholders 199,695    
Movements in equity, Non-controlling shareholders 5    
Movements in result, Non-controlling shareholders 1,129    
Equity at end of period 1,434,482 0  
Telefônica Cloud e Tecnologia do Brasil ("CloudCo Brasil")      
EQUITY      
Equity at beginning of period 25,113 22,746  
Equity attributable to owners of parent 75,194 12,559 11,375
Non-controlling shareholders 75,161 12,554 R$ 11,371
Company 62,635 1,184  
Movements in equity, Company (100) 15  
Movements in result, Company 6,616 1,169  
Merger of companies, Company 56,119    
Non-controlling shareholders 62,607 1,183  
Movements in equity, Non-controlling shareholders (100) 14  
Movements in result, Non-controlling shareholders 6,611 1,169  
Merger of companies, Non-controlling shareholders 56,096    
Equity at end of period R$ 150,355 R$ 25,113