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Provisions - Employee Benefits Narrative (Details) € in Millions |  | 12 Months Ended
--- | --- | ---
Dec. 28, 2023 worker model | Dec. 28, 2023 yr worker | Dec. 31, 2024 EUR (€) | Dec. 31, 2023 EUR (€)
Disclosure of other provisions [line items] |  |  |  |
Restructuring provision |  |  | € 104 | € 1,538
Number of workers | worker | 3,420 | 3,420 |  |
Minimum age of employees (in years) | 56 | 56 |  |
Minimum seniority of employees (in years) | yr |  | 15 |  |
Expense of restructuring activities |  |  |  | 1,320
Telefónica Spain |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Expense of restructuring activities |  |  | 1,248 | 1,299
Current restructuring provision |  |  | 231 | 107
Telefónica Spain | Operating segments |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Restructuring provision |  |  | € 27 | € 1,320
Restructuring provision | Telefónica Spain |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Discount rate |  |  | 2.76% |
Average duration of plans |  |  | 3 years 2 months 8 days |

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- Definition The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 144 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_144&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of expense relating to restructuring. Restructuring is a programme that is planned and controlled by management and materially changes either the scope of a business undertaken by an entity or the manner in which that business is conducted. Such programmes include: (a) the sale or termination of a line of business; (b) closure of business locations in a country or region or the relocation of activities from one country or region to another; (c) changes in management structure; and (d) fundamental reorganisations that have a material effect on the nature and focus of the entity's operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 98 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_b&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of provision for restructuring, such as the sale or termination of a line of business; closure of business locations in a country or region or relocation of activities from one country or region to another; changes in management structure; and fundamental reorganisations that have a material effect on the nature and focus of the entity's operations. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2024-01-01 -Paragraph 70 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_70&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of current provision for restructuring. [Refer: Restructuring provision] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2024-01-01 -Paragraph 70 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_70&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The weighted average duration of a defined benefit obligation. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 147 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_147_c&doctype=Standard -URIDate 2024-03-27 + Details
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