BALANCES AND TRANSACTIONS WITH RELATED PARTIES - Management compensation - Additional Information (Details) - BRL (R$) R$ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Disclosure of transactions between related parties [abstract]
Key management personnel compensation	R$ 79,300	R$ 67,496
Salaries, benefits and social charges	40,632	36,179
Variable compensation	R$ 38,668	R$ 31,317

The amount of compensation to key management personnel in the form of salaries, benefits and social charges.

No definition available.

Name:	viv_KeyManagementPersonnelCompensationSalariesBenefitsAndSocialCharges
Namespace Prefix:	viv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration