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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
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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 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 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_8_h&doctype=Standard -URIDate 2023-03-23 + Details
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