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Appendix II: Board and Senior Management Compensation - Life Insurance Premiums (Details) - Life insurance premiums	12 Months Ended
	Dec. 31, 2022 EUR (€)
Mr. José María Álvarez-Pallete López
Disclosure of transactions between related parties [line items]
Life insurance premiums	€ 74,699
Mr. Ángel Vilá Boix
Disclosure of transactions between related parties [line items]
Life insurance premiums	€ 58,820

X

- 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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X

- Definition

The amount of expense arising from insurance contracts. [Refer: Types of insurance contracts [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2023-01-01
-Name IFRS
-Number 4
-IssueDate 2022-03-24
-Paragraph 37
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_37_b&doctype=Standard&book=b
-URIDate 2022-03-24

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X

- Details

Name:	ifrs-full_CounterpartiesAxis=tef_JoseMariaAlvarezPalleteLopezMember
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X

- Details

Name:	ifrs-full_CounterpartiesAxis=tef_AngelVilaBoixMember
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