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Financial assets at fair value through other comprehensive income - Summary of financial assets at fair value through other comprehensive income (Details) - EUR (€) € in Millions	Dec. 31, 2023	Dec. 31, 2022
Disclosure Of Financial Assets [Line Items]
Financial assets at fair value through other comprehensive income	€ 41,116	€ 31,625
Equity securities
Disclosure Of Financial Assets [Line Items]
Financial assets at fair value through other comprehensive income	1,885	1,887
Debt securities
Disclosure Of Financial Assets [Line Items]
Financial assets at fair value through other comprehensive income	38,281	29,095
Debt securities | Financial assets at FVOCI | Accumulated impairments
Disclosure Of Financial Assets [Line Items]
Financial assets at fair value through other comprehensive income	13	21
Loans and receivables
Disclosure Of Financial Assets [Line Items]
Financial assets at fair value through other comprehensive income	951	643
Loans and receivables | Financial assets at FVOCI | Accumulated impairments
Disclosure Of Financial Assets [Line Items]
Financial assets at fair value through other comprehensive income	€ 8	€ 1

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- 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.

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- Definition

The amount of financial assets at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets; Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 8
-Subparagraph h
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-URIDate 2023-03-23

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