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Other Information - Commitment Investment in Allianz (Details) - FTTH Joint Venture - EUR (€) € in Millions	Jan. 21, 2021	Oct. 29, 2020
Commitments [Line Items]
Commitment to fund investment		€ 500
Commitment to fund investment, period		6 years
Proportion of ownership interest in joint venture	50.00%
TEF Infra Germany
Commitments [Line Items]
Commitment to fund investment		€ 400
Proportion of ownership interest in joint venture	40.00%
TEF Germany
Commitments [Line Items]
Commitment to fund investment		100
Proportion of ownership interest in joint venture	10.00%
Allianz
Commitments [Line Items]
Commitment to fund investment		€ 1,000
Proportion of ownership interest in joint venture	50.00%

X

- Definition

The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Total for all joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_iii&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_iii&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iv&doctype=Standard
-URIDate 2024-03-27

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- Definition

Commitment To Fund Investment

+ References

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- Definition

Commitment To Fund Investment, Period

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- Definition

Commitments [Line Items]

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No definition available.

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