Guarantees, commitments and risks - Commitments and risks (Details) - EUR (€) € in Millions	Dec. 31, 2024	Dec. 31, 2023
Guarantees, commitments and risks
Commitments	€ 84,129	€ 79,513
Risks	1,046	1,140
Commitments and risks	€ 85,175	€ 80,653

The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

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