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Financial assets at fair value through other comprehensive income- Summary of equity securities designated as at fair value through other comprehensive income (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |
Carrying value | € 1,885 | € 1,887
Dividend income | 105 | 149
Investment in Bank of Beijing |  |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |
Carrying value | 1,590 | 1,614
Dividend income | 98 | 111
Other Investments |  |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |
Carrying value | 295 | 273
Dividend income | € 7 | € 38

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- Definition The amount of dividends related to investments in equity instruments that the entity has designated at fair value through other comprehensive income, held at the end of the reporting period. [Refer: Investments in equity instruments designated at fair value through other comprehensive income [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 11A -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_11A_d&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: At fair value [member]; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 11A -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_11A_c&doctype=Standard -URIDate 2023-03-23 Reference 2: 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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