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Valuation results and net trading income - Summary of valuation results and net trading income (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Valuation Results And Net Trading Income [Line Items] |  |  |
Securities trading results | € 873 | € (356) | € 787
Derivatives trading results | 116 | 11 | (554)
Other trading results | 273 | 71 | 84
Change in fair value of assets and liabilities (hedged items) | (1,679) | 5,563 | 1,330
Valuation results on assets and liabilities designated at FVPL (excluding trading) | (128) | 439 | (13)
Foreign exchange transactions results | 1,230 | 38 | 567
Valuation results and net trading income | (1,732) | 12,214 | 2,065
- fair value hedges |  |  |
Valuation Results And Net Trading Income [Line Items] |  |  |
Change in fair value of derivatives relating to | 1,606 | (5,928) | (1,317)
– cash flow hedges (ineffective portion) |  |  |
Valuation Results And Net Trading Income [Line Items] |  |  |
Change in fair value of derivatives relating to | 48 | 20 | 1
– other non-trading derivatives |  |  |
Valuation Results And Net Trading Income [Line Items] |  |  |
Change in fair value of derivatives relating to | € (4,071) | € 12,358 | € 1,179

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- Definition The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_85&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of trading income (expense) that the entity does not separately disclose in the same statement or note. [Refer: Trading income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of income (expense) relating to trading assets and liabilities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_85&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of trading income (expense) relating to derivative financial instruments. [Refer: Derivatives [member]; Trading income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of trading income (expense) relating to foreign exchange contracts. [Refer: Trading income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Gains losses on assets and liabilities designated at fair value through profit or loss excluding trading. + References No definition available. + Details
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- Definition Valuation Results And Net Trading Income [Line Items] + References No definition available. + Details
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- Details
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