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Basis of Presentation of the Consolidated Financial Statements - Impairment of Goodwill of Telefonica Argentina and Telefonica del Peru (Details) - Goodwill - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of subsidiaries [line items]
Write-offs	€ 0	€ 416
Telefónica Peru
Disclosure of subsidiaries [line items]
Write-offs		€ 393

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- Definition

The amount of impairment loss recognised in profit or loss for intangible assets and goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets and goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 38
-IssueDate 2022-03-24
-Paragraph 118
-Subparagraph e
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2022-en-r&anchor=para_118_e_iv&doctype=Standard
-URIDate 2022-03-24

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