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Other Current Financial Assets - Narrative (Details) € in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 EUR (€) | Dec. 31, 2022 EUR (€) | Dec. 31, 2022 USD ($)
Disclosure of financial assets [line items] |  |  |
Other current financial assets | € 3,835 | € 2,444 |
Contractual limit amount | 84,794 | 83,706 |
Spire Notes |  |  |
Disclosure of financial assets [line items] |  |  |
Contractual limit amount | 1,000 | 939 | $ 1,000
Other current financial assets | 591 | 939 |
Other long-term credits | € 295 |  |
Short-term credits - bank deposits |  |  |
Disclosure of financial assets [line items] |  |  |
Maturity of short-term credits | 1 month |  |
Other current financial assets |  | 1,190 |
Deposits and guarantees |  |  |
Disclosure of financial assets [line items] |  |  |
Other current financial assets | € 760 | 439 |
Other current financial assets - short-term investments |  |  |
Disclosure of financial assets [line items] |  |  |
Other current financial assets | 105 | 126 |
Telefónica Brazil | Deposits and guarantees |  |  |
Disclosure of financial assets [line items] |  |  |
Other current financial assets | 17 | 106 |
Telefónica Emisiones, S.A.U. | Deposits and guarantees |  |  |
Disclosure of financial assets [line items] |  |  |
Other current financial assets | € 433 |  |
Minimum maturity of short-term deposits and guarantees | 90 days |  |
Telefónica, S.A. |  |  |
Disclosure of financial assets [line items] |  |  |
Other current financial assets | € 3,835 | 2,444 |
Telefónica, S.A. | Deposits and guarantees |  |  |
Disclosure of financial assets [line items] |  |  |
Other current financial assets | € 150 | € 232 |

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