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Intangible Assets - Narrative (Details) - EUR (€) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of detailed information about intangible assets [line items] |  |  |
Additions | € 1,799 |  |
Impairment loss recognised in profit or loss, intangible assets other than goodwill | 506 | € 2 |
Intangible assets | 9,875 | 11,370 | € 12,017
Telefónica Argentina |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Intangible assets | 265 | 415 |
Service concession arrangements and licenses |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Additions | 157 | 183 |
Impairment loss recognised in profit or loss, intangible assets other than goodwill | 485 | 0 |
Intangible assets | 5,667 | 6,886 | 7,550
Service concession arrangements and licenses | Telefónica Hispam | Colombia |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Additions | 87 |  |
Service concession arrangements and licenses | Telefónica Hispam | Ecuador |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Additions | 19 | 18 |
Service concession arrangements and licenses | Telefónica Hispam | Uruguay |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Additions | 23 | 24 |
Service concession arrangements and licenses | Telefónica Hispam | Argentina |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Additions |  | 109 |
Service concession arrangements and licenses | Telefónica Spain | Spain |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Additions | 25 |  |
Service concession arrangements and licenses | Telefónica Brazil |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Additions | 4 |  |
Service concession arrangements and licenses | Telefónica Peru |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Impairment loss recognised in profit or loss, intangible assets other than goodwill | 54 |  |
Service concession arrangements and licenses | Telefónica Argentina |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Impairment loss recognised in profit or loss, intangible assets other than goodwill | 415 |  |
Software |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Impairment loss recognised in profit or loss, intangible assets other than goodwill | 21 | 0 |
Intangible assets | 3,104 | € 3,089 | € 2,800
Software | Telefónica Argentina |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Impairment loss recognised in profit or loss, intangible assets other than goodwill | € 21 |  |

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