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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 | Jun. 30, 2025 | Dec. 31, 2024
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Disclosure of financial assets [line items] |  |
Financial assets at fair value through other comprehensive income | € 49,846 | € 46,389
Equity securities |  |
Disclosure of financial assets [line items] |  |
Financial assets at fair value through other comprehensive income | 2,753 | 2,562
Debt securities |  |
Disclosure of financial assets [line items] |  |
Financial assets at fair value through other comprehensive income | 45,618 | 42,219
Debt securities | Financial assets at FVOCI | Provisions |  |
Disclosure of financial assets [line items] |  |
Financial assets at fair value through other comprehensive income | 15 | 12
Loans and receivables |  |
Disclosure of financial assets [line items] |  |
Financial assets at fair value through other comprehensive income | 1,475 | 1,608
Loans and receivables | Financial assets at FVOCI | Provisions |  |
Disclosure of financial assets [line items] |  |
Financial assets at fair value through other comprehensive income | € 2 | € 7

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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 2024-01-01 -Paragraph 8 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_8_h&doctype=Standard -URIDate 2024-03-27 + Details
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