XML 292 R273.htm IDEA: XBRL DOCUMENT v3.25.0.1

Other Information - Commitments Liberty Global UK (Details) - VMO2				7 Months Ended	12 Months Ended
	Dec. 31, 2021	Jun. 01, 2021	May 07, 2020	Dec. 31, 2021	Dec. 31, 2024
Commitments [Line Items]
Proportion of ownership interest in joint venture	50.00%			50.00%	50.00%
Minimum
Commitments [Line Items]
Service agreement, transitional services, term				7 months
Service agreement, ongoing services, term				2 years
Maximum
Commitments [Line Items]
Service agreement, transitional services, term				24 months
Transitional services, extension term				40 months
Service agreement, ongoing services, term				6 years
Telefónica O2 Holdings Ltd. Holding company
Commitments [Line Items]
Proportion of ownership interest in joint venture		50.00%	50.00%
Liberty Global
Commitments [Line Items]
Proportion of ownership interest in joint venture			50.00%

X

- Definition

The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Total for all joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_iii&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_iii&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iv&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInJointVenture
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Commitments [Line Items]

+ References

No definition available.

+ Details

Name:	tef_CommitmentsLineItems
Namespace Prefix:	tef_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Joint Venture, Service Agreement, Ongoing Services, Term

+ References

No definition available.

+ Details

Name:	tef_JointVentureServiceAgreementOngoingServicesTerm
Namespace Prefix:	tef_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Joint Venture, Service Agreement, Transitional Services, Extension Term

+ References

No definition available.

+ Details

Name:	tef_JointVentureServiceAgreementTransitionalServicesExtensionTerm
Namespace Prefix:	tef_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Joint Venture, Service Agreement, Transitional Services, Term

+ References

No definition available.

+ Details

Name:	tef_JointVentureServiceAgreementTransitionalServicesTerm
Namespace Prefix:	tef_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_JointVenturesAxis=tef_VMEDO2UKLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=tef_TelefonicaO2HoldingsLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=tef_LibertyGlobalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: