PENSIONS PLANS AND OTHER POST-EMPLOYMENT BENEFITS (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
PENSION PLANS AND OTHER POST-EMPLOYMENT BENEFITS
Actuarial losses (gains)	R$ 357,002	R$ (498,794)	R$ 704,985
Asset limitation effect	(373,341)	(56,647)	(557,103)
Post-employment benefits recognized in other comprehensive income (loss)	(16,339)	(555,441)	147,882
Defined benefit plans other than multi-employer plans, state plans and plans that share risks between entities under common control
PENSION PLANS AND OTHER POST-EMPLOYMENT BENEFITS
Actuarial losses (gains)	279,120	(73,304)	352,011
Asset limitation effect	(373,341)	(56,647)	(431,071)
Post-employment benefits recognized in other comprehensive income (loss)	(94,221)	(129,951)	(79,060)
Income tax and social contribution levied on all amounts recognized in other comprehensive income	6,277	188,153	48,925
Others Deferred Income Tax And Social Contribution Tax Expense Income	30,129	149,103	79,229
Current income tax and social contribution	36,406	39,050	30,304
Post-retirement health plans
PENSION PLANS AND OTHER POST-EMPLOYMENT BENEFITS
Actuarial losses (gains)	77,882	(425,490)	352,974
Asset limitation effect	0	0	(126,032)
Post-employment benefits recognized in other comprehensive income (loss)	R$ 77,882	R$ (425,490)	R$ 226,942

The amount of other comprehensive income, before tax, resulting from actuarial gains (losses) arising from experience adjustments that result in remeasurements of the net defined benefit liability (asset). Experience adjustments deal with the effects of differences between the previous actuarial assumptions and what has actually occurred. [Refer: Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans] [Contrast: Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from experience adjustments]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2025-01-01
-Paragraph 135
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_135_b&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsBeforeTaxDefinedBenefitPlans
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of other comprehensive income, before tax, resulting from the gain (loss) on changes in the effect of limiting a net defined benefit asset to the asset ceiling, excluding amounts included in interest income or expense. [Refer: Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans] [Contrast: Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on changes in effect of limiting net defined benefit asset to asset ceiling excluding interest income or expense]

+ References

+ Details

Name:	ifrs-full_GainsLossesOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeilingExcludingInterestIncomeOrExpenseBeforeTaxDefinedBenefitPlans
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Current income tax and social contribution

+ References

No definition available.

+ Details

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

- Definition

Income tax and social contribution levied on all amounts recognized in other comprehensive income

+ References

No definition available.

+ Details

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

- Definition

Others Deferred Income Tax And Social Contribution Tax Expense Income

+ References

No definition available.

+ Details

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

- Definition

Post-employment benefits recognized in other comprehensive income (loss)

+ References

No definition available.

+ Details

Name:	viv_PostEmploymentBenefitsRecognizedInOtherComprehensiveIncomeLoss
Namespace Prefix:	viv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	ifrs-full_DefinedBenefitPlansAxis=ifrs-full_DefinedBenefitPlansOtherThanMultiemployerPlansStatePlansAndPlansThatShareRisksBetweenEntitiesUnderCommonControlMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_DefinedBenefitPlansAxis=viv_DefinedBenefitPostRetirementHealthPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: