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Financial liabilities at fair value through profit or loss - Non-trading rerivatives by type (Detail) - EUR (€) € in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of fair value measurement of liabilities [line items] |  |
Non-trading derivatives | € 2,019 | € 3,048
Other non-trading derivatives |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Non-trading derivatives | 1,356 | 1,446
- fair value hedges |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Non-trading derivatives | 113 | 244
Cash flow hedges |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Non-trading derivatives | 458 | 1,275
- hedges of net investments in foreign operations |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Non-trading derivatives | € 92 | € 83

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