XML 187 R168.htm IDEA: XBRL DOCUMENT v3.25.0.1

Equity - Treasury Shares Instruments Narrative (Details) - EUR (€) € in Millions, shares in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share Capital, Reserves And Other Equity Interest [Abstract]
Purchase of treasury shares	€ 145	€ 223	€ 365
Derivative financial instrument notional shares equivalent	173	193

X

- Definition

The decrease in equity resulting from the purchase of treasury shares. [Refer: Treasury shares]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 106
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard
-URIDate 2024-03-27

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Definition

Derivative Financial Instrument Shares Equivalent

+ References

No definition available.

+ Details

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Namespace Prefix:	tef_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Share capital, reserves and other equity interest [Abstract]

+ References

No definition available.

+ Details

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Namespace Prefix:	tef_
Data Type:	xbrli:stringItemType
Balance Type:	na
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