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Derivative Financial Instruments and Risk Management Policies - Country Risk (Details) € in Millions	12 Months Ended
	Dec. 31, 2022 EUR (€)
Disclosure of financial liabilities [line items]
Borrowings	€ 26,687
Proportion of net financial debt held (as a percent)	9.20%
Net repatriation of funds from dividends received	€ 652
Telefonica Hispanoamerica
Disclosure of financial liabilities [line items]
Borrowings	2,462
Net repatriation of funds to Spain	€ 693

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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.

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No definition available.

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- Definition

The amount of a hedging instrument, recognised as a liability. [Refer: Hedging instruments [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 24A
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_24A_a&doctype=Standard
-URIDate 2022-03-24

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- Definition

Net Repatriation Of Funds

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Net Repatriation Of Funds, Dividends

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- Definition

Percentage Of Net Financial Debt Held

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