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Basis of Presentation of the Consolidated Financial Statements - Impairment of Telefonicas assets Peru and ordinary insolvency procedure, Impairment of Goodwill Chile CGU (Details) € in Millions, S/ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 EUR (€) | Dec. 31, 2023 EUR (€) | Dec. 31, 2022 EUR (€) | Feb. 14, 2025 EUR (€) | Feb. 14, 2025 PEN (S/)
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Goodwill impairment | € 866 | € 58 | € 0 |  |
Impairment loss recognised in profit or loss, intangible assets other than goodwill | 506 | 2 |  |  |
Notional amount | 84,933 | € 81,097 |  |  |
Credit Facility Due Aug 2026 | Loans and other debts |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Notional amount |  |  |  | € 394 | S/ 1,549
Borrowing term |  |  |  | 18 months | 18 months
Pangea |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Reversal of deferred tax assets | 13 |  |  |  |
Impairment loss, property, plant and equipment | 108 |  |  |  |
Fiber optic assets in Peru |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Goodwill impairment | 34 |  |  |  |
Peru |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Goodwill impairment | 226 |  |  |  |
Reversal of deferred tax assets | 91 |  |  |  |
Net assets | 124 |  |  |  |
Peru | Telefónica Hispam |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Goodwill impairment | 226 |  |  |  |
Peru | Fiber optic assets in Peru |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Goodwill impairment | 34 |  |  |  |
Impairment loss recognised in profit or loss, intangible assets other than goodwill | 54 |  |  |  |
Chile | Telefónica Hispam |  |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |  |
Goodwill impairment | € 397 |  |  |  |

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