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Contingent liabilities and commitments - Narrative (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities and commitments | € 218,728 | € 209,828
Contingent liabilities | 43,296 | 42,821
Financial assets pledged | 105,944 | 106,052
Deposit Guarantee Scheme |  |
Disclosure of contingent liabilities [line items] |  |
Financial assets pledged |  | 319
Voya Financial Inc |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities and commitments | 219 | 205
Contingent liabilities in respect of guarantees |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | 26,908 | 27,894
Contingent liabilities in respect of guarantees | Voya Financial Inc |  |
Disclosure of contingent liabilities [line items] |  |
Debenture loans | 0 | 0
Irrevocable payment commitments | Single Resolution Fund |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | 346 | 346
Additions to contingent liabilities | 0 | 63
Called from contingent liabilities | 0 | 0
Irrevocable payment commitments | Deposit Guarantee Scheme |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | 309 | 273
Additions to contingent liabilities | 35 | 36
Called from contingent liabilities | 0 | € 0
Financial assets pledged | € 336 |

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- Definition The amount of the estimated financial effect of contingent liabilities. [Refer: Classes of contingent liabilities [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2024-01-01 -Paragraph 86 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_86_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of notes and debentures issued by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
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