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Equity - Translation Differences Narrative (Details) - EUR (€) € in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of reserves within equity [line items]
Accumulated contribution of translation differences	€ (21,279)	€ (20,686)	€ (20,723)
Telefónica Móviles Argentina, S.A. Telecommunications service provider
Disclosure of reserves within equity [line items]
Accumulated contribution of translation differences	€ 1,107	€ 2,006

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

A component of equity representing exchange differences on translation of financial statements recognised in other comprehensive income and accumulated in equity. [Refer: Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 21
-IssueDate 2024-01-01
-Paragraph 52
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2024-en-r&anchor=para_52_b&doctype=Standard
-URIDate 2024-03-27

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