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Valuation results and net trading income - Summary of valuation results and net trading income (Details) - EUR (€) € in Millions | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Valuation Results And Net Trading Income [Line Items] |  |
Securities trading results | € 2,194 | € 492
Derivatives trading results | (1,169) | 292
Other trading results | 165 | 173
Change in fair value of assets and liabilities (hedged items) | (667) | (12)
Valuation results on assets and liabilities designated at FVPL (excluding trading) | 55 | 93
Foreign exchange transactions results | 3,190 | (1,630)
Valuation results and net trading income | 2,773 | 3,016
– fair value hedges |  |
Valuation Results And Net Trading Income [Line Items] |  |
Change in fair value of derivatives relating to | 671 | 22
– cash flow hedges (ineffective portion) |  |
Valuation Results And Net Trading Income [Line Items] |  |
Change in fair value of derivatives relating to | 4 | 12
– other non-trading derivatives |  |
Valuation Results And Net Trading Income [Line Items] |  |
Change in fair value of derivatives relating to | € (1,669) | € 3,574

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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 2024-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard -URIDate 2024-03-27 + 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 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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- 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 2024-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard -URIDate 2024-03-27 + 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 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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- 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 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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- 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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