Risk Report - Asset Quality - Legal Claims (Detail: Text Values) - EUR (€) € in Millions	Dec. 31, 2023	Dec. 31, 2022
Legal Claims [Abstract]
Amounts outstanding on financial assets written off and still subject to enforcement activity	€ 334	€ 175

The contractual amount outstanding on financial assets that were written off during the reporting period and are still subject to enforcement activity. [Refer: Financial assets]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 35L
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35L&doctype=Standard
-URIDate 2023-03-23

Name:	ifrs-full_FinancialAssetsWrittenOffDuringReportingPeriodAndStillSubjectToEnforcementActivityContractualAmountOutstanding
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant