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Contingent liabilities and commitments - Summary of contingent liabilities and commitments (Details) - EUR (€) € in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | € 43,296 | € 42,821
Guarantees issued by ING Groep N.V. | 210 | 197
Irrevocable facilities | 175,222 | 166,810
Contingent liabilities and commitments | 218,728 | 209,828
Discounted bills |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities |  | 2
Contingent liabilities in respect of guarantees |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | 26,908 | 27,894
Contingent liabilities in respect of irrevocable letters of credit |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | € 16,388 | € 14,925

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