Note 29 - Components of Other Short-Term Borrowings (Detail) - EUR (€) € in Millions	Dec. 31, 2023	Dec. 31, 2022
Other short-term borrowings [Abstract]
Commercial paper	€ 5,497	€ 1,899
Other	4,123	3,223
Total other short-term borrowings	€ 9,620	€ 5,122

The amount of commercial paper issued by the entity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant