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Breakdown of Financial Assets - Summary (Details) - EUR (€) € in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | € 5,339 | € 5,201 |
Current financial assets | 1,800 | 1,078 |
Investments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 585 | 616 | € 497
Credits and other financial assets |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 602 | 741 | 981
Deposits and guarantees |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 691 | 966 | 1,163
Current financial assets | 139 | 209 |
Derivative instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 2,605 | 1,940 |
Current financial assets | 461 | 352 |
Trade receivables |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 945 | 1,049 | 1,019
Trade receivables | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | (106) | (125) | (128)
Total | (3,048) | (2,992) | (2,891)
Trade receivables for subleases |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 17 | 14 | € 19
Telefonica, S.A. |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 5,339 | 5,201 |
Current financial assets | 17,426 | 15,659 |
Total | 22,765 | 20,860 |
Non-current financial assets, fair value | 5,339 | 5,201 |
Current financial assets, fair value | 17,426 | 15,659 |
Financial assets, fair value | 22,765 | 20,860 |
Telefonica, S.A. | Level 1 (Quoted prices) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 523 | 537 |
Current financial assets | 312 | 293 |
Total | 835 | 830 |
Telefonica, S.A. | Level 2 (Other directly observable market inputs) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 2,912 | 2,326 |
Current financial assets | 1,320 | 1,214 |
Total | 4,232 | 3,540 |
Telefonica, S.A. | Level 3 (Inputs not based on observable market data) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 14 | 13 |
Current financial assets | 0 | 0 |
Total | 14 | 13 |
Telefonica, S.A. | Held for trading |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 247 | 224 |
Current financial assets | 367 | 291 |
Total | 614 | 515 |
Telefonica, S.A. | Fair value option |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Total | 0 | 0 |
Telefonica, S.A. | Debt instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 218 | 289 |
Current financial assets | 894 | 945 |
Total | 1,112 | 1,234 |
Telefonica, S.A. | Equity instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 543 | 578 |
Current financial assets | 0 | 0 |
Total | 543 | 578 |
Telefonica, S.A. | Hedges |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 2,441 | 1,785 |
Current financial assets | 371 | 271 |
Total | 2,812 | 2,056 |
Telefonica, S.A. | Amortized cost |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 1,890 | 2,325 |
Current financial assets | 15,794 | 14,152 |
Total | 17,684 | 16,477 |
Telefonica, S.A. | Investments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 585 | 616 |
Non-current financial assets, fair value | 585 | 616 |
Telefonica, S.A. | Investments | Level 1 (Quoted prices) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 478 | 510 |
Telefonica, S.A. | Investments | Level 2 (Other directly observable market inputs) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 107 | 106 |
Telefonica, S.A. | Investments | Level 3 (Inputs not based on observable market data) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Investments | Held for trading |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 42 | 38 |
Telefonica, S.A. | Investments | Fair value option |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Investments | Debt instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Investments | Equity instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 543 | 578 |
Telefonica, S.A. | Investments | Hedges |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Investments | Amortized cost |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Credits and other financial assets |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 602 | 741 |
Non-current financial assets, fair value | 602 | 741 |
Telefonica, S.A. | Credits and other financial assets | Level 1 (Quoted prices) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 45 | 27 |
Telefonica, S.A. | Credits and other financial assets | Level 2 (Other directly observable market inputs) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Credits and other financial assets | Level 3 (Inputs not based on observable market data) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 14 | 13 |
Telefonica, S.A. | Credits and other financial assets | Held for trading |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 41 | 31 |
Telefonica, S.A. | Credits and other financial assets | Fair value option |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Credits and other financial assets | Debt instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 18 | 9 |
Telefonica, S.A. | Credits and other financial assets | Equity instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Credits and other financial assets | Hedges |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Credits and other financial assets | Amortized cost |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 543 | 701 |
Telefonica, S.A. | Deposits and guarantees |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 691 | 966 |
Non-current financial assets, fair value | 691 | 966 |
Telefonica, S.A. | Deposits and guarantees | Level 1 (Quoted prices) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Deposits and guarantees | Level 2 (Other directly observable market inputs) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Deposits and guarantees | Level 3 (Inputs not based on observable market data) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Deposits and guarantees | Held for trading |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Deposits and guarantees | Fair value option |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Deposits and guarantees | Debt instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Deposits and guarantees | Equity instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Deposits and guarantees | Hedges |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Deposits and guarantees | Amortized cost |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 691 | 966 |
Telefonica, S.A. | Derivative instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 2,605 | 1,940 |
Non-current financial assets, fair value | 2,605 | 1,940 |
Telefonica, S.A. | Derivative instruments | Level 1 (Quoted prices) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Derivative instruments | Level 2 (Other directly observable market inputs) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 2,605 | 1,940 |
Telefonica, S.A. | Derivative instruments | Level 3 (Inputs not based on observable market data) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Derivative instruments | Held for trading |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 164 | 155 |
Telefonica, S.A. | Derivative instruments | Fair value option |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Derivative instruments | Debt instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Derivative instruments | Equity instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Derivative instruments | Hedges |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 2,441 | 1,785 |
Telefonica, S.A. | Derivative instruments | Amortized cost |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 945 | 1,049 |
Current financial assets | 10,612 | 10,422 |
Non-current financial assets, fair value | 839 | 924 |
Current financial assets, fair value | 7,564 | 7,430 |
Telefonica, S.A. | Trade receivables | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | (106) | (125) |
Current financial assets | (3,048) | (2,992) |
Non-current financial assets, fair value | 0 | 0 |
Current financial assets, fair value | 0 | 0 |
Telefonica, S.A. | Trade receivables | Level 1 (Quoted prices) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Level 1 (Quoted prices) | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Level 2 (Other directly observable market inputs) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 200 | 280 |
Current financial assets | 850 | 854 |
Telefonica, S.A. | Trade receivables | Level 2 (Other directly observable market inputs) | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Level 3 (Inputs not based on observable market data) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Level 3 (Inputs not based on observable market data) | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Held for trading |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Held for trading | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Fair value option |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Fair value option | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Debt instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 200 | 280 |
Current financial assets | 850 | 854 |
Telefonica, S.A. | Trade receivables | Debt instruments | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Equity instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Equity instruments | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Hedges |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Hedges | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables | Amortized cost |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 745 | 769 |
Current financial assets | 9,762 | 9,568 |
Telefonica, S.A. | Trade receivables | Amortized cost | Impairment losses |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | (106) | (125) |
Current financial assets | (3,048) | (2,992) |
Telefonica, S.A. | Trade receivables for subleases |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 17 | 14 |
Non-current financial assets, fair value | 17 | 14 |
Telefonica, S.A. | Trade receivables for subleases | Level 1 (Quoted prices) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables for subleases | Level 2 (Other directly observable market inputs) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables for subleases | Level 3 (Inputs not based on observable market data) |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables for subleases | Held for trading |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables for subleases | Fair value option |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables for subleases | Debt instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables for subleases | Equity instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables for subleases | Hedges |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 0 | 0 |
Telefonica, S.A. | Trade receivables for subleases | Amortized cost |  |  |
Disclosure of financial assets [line items] |  |  |
Non-current financial assets | 17 | 14 |
Telefonica, S.A. | Other financial assets |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 1,800 | 1,078 |
Current financial assets, fair value | 1,800 | 1,078 |
Telefonica, S.A. | Other financial assets | Level 1 (Quoted prices) |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 312 | 293 |
Telefonica, S.A. | Other financial assets | Level 2 (Other directly observable market inputs) |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 470 | 360 |
Telefonica, S.A. | Other financial assets | Level 3 (Inputs not based on observable market data) |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Other financial assets | Held for trading |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 367 | 291 |
Telefonica, S.A. | Other financial assets | Fair value option |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Other financial assets | Debt instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 44 | 91 |
Telefonica, S.A. | Other financial assets | Equity instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Other financial assets | Hedges |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 371 | 271 |
Telefonica, S.A. | Other financial assets | Amortized cost |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 1,018 | 425 |
Telefonica, S.A. | Cash and cash equivalents |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 8,062 | 7,151 |
Current financial assets, fair value | 8,062 | 7,151 |
Telefonica, S.A. | Cash and cash equivalents | Level 1 (Quoted prices) |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Cash and cash equivalents | Level 2 (Other directly observable market inputs) |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Cash and cash equivalents | Level 3 (Inputs not based on observable market data) |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Cash and cash equivalents | Held for trading |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Cash and cash equivalents | Fair value option |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Cash and cash equivalents | Debt instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Cash and cash equivalents | Equity instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Cash and cash equivalents | Hedges |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | 0 | 0 |
Telefonica, S.A. | Cash and cash equivalents | Amortized cost |  |  |
Disclosure of financial assets [line items] |  |  |
Current financial assets | € 8,062 | € 7,151 |

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- Definition The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35H -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35M -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M&doctype=Standard -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35N -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35N&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35I -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35I&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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