XML 138 R119.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Goodwill - Reconciliation of Goodwill by Group Segment (Details) - Goodwill (Note 7) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | € 18,708 | € 18,471
Additions | 28 | 16
Disposals | (16) | 0
Write-offs | (866) | (58)
Transfers | 0 | (36)
Exchange rate impact | (1,393) | 315
Ending balance | 16,461 | 18,708
Telefónica Spain | Operating segments |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | 4,291 | 4,291
Additions | 0 | 0
Disposals | 0 | 0
Write-offs | 0 | 0
Transfers | 0 | 0
Exchange rate impact | 0 | 0
Ending balance | 4,291 | 4,291
Telefónica Brazil | Operating segments |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | 8,076 | 7,752
Additions | 28 | 5
Disposals | 0 | 0
Write-offs | 0 | 0
Transfers | 0 | 0
Exchange rate impact | (1,364) | 319
Ending balance | 6,740 | 8,076
Telefónica Germany | Operating segments |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | 4,386 | 4,386
Additions | 0 | 0
Disposals | 0 | 0
Write-offs | 0 | 0
Transfers | 0 | 0
Exchange rate impact | 0 | 0
Ending balance | 4,386 | 4,386
Telefónica Hispam | Operating segments |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | 1,108 | 1,215
Additions | 0 | 0
Disposals | (16) | 0
Write-offs | (623) | (58)
Transfers | 0 | (36)
Exchange rate impact | (51) | (13)
Ending balance | 418 | 1,108
Others | Operating segments |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Beginning balance | 847 | 827
Additions | 0 | 11
Disposals | 0 | 0
Write-offs | (243) | 0
Transfers | 0 | 0
Exchange rate impact | 22 | 9
Ending balance | € 626 | € 847

X
- Definition The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Total for all business combinations [member]; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The decrease in intangible assets and goodwill resulting from disposals. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_ii&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_DisposalsIntangibleAssetsAndGoodwill
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of impairment loss recognised in profit or loss for intangible assets and goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) in intangible assets and goodwill resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_vii&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) in intangible assets and goodwill resulting from transfers. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_IncreaseDecreaseThroughTransfersIntangibleAssetsAndGoodwill
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_IntangibleAssetsAndGoodwill
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_ReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_GoodwillMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=tef_TelefonicaSpainMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=ifrs-full_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=tef_TelefonicaBrazilMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=tef_TelefonicaGermanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=tef_TelefnicaHispamMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=ifrs-full_AllOtherSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |