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Other disclosures - Schedule of offsetting of financial instruments (Details) - EUR (€) € in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
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Financial assets offset in the consolidated balance sheets |  |  |
Gross amount of financial assets | € 335,242 | € 341,365 | € 329,088
Gross amount of financial assets offset in the balance sheet | (131,982) | (150,047) | (167,383)
Net amount of financial assets presented in the balance sheet | 203,260 | 191,318 | 161,705
Financial liabilities offset in the consolidated balance sheets |  |  |
Gross amount of financial liabilities | 358,625 | 368,205 | 358,968
Gross amount of financial liabilities offset in the balance sheet | (131,982) | (150,047) | (167,383)
Net amount of financial liabilities presented in the balance sheet | 226,643 | 218,158 | 191,585
Derivatives |  |  |
Financial liabilities offset in the consolidated balance sheets |  |  |
Gross amount of financial liabilities | 111,664 | 145,064 | 146,128
Gross amount of financial liabilities offset in the balance sheet | (55,447) | (82,559) | (87,883)
Net amount of financial liabilities presented in the balance sheet | 56,217 | 62,505 | 58,245
Reverse repurchase agreements |  |  |
Financial liabilities offset in the consolidated balance sheets |  |  |
Gross amount of financial liabilities | 246,961 | 223,141 | 212,840
Gross amount of financial liabilities offset in the balance sheet | (76,535) | (67,488) | (79,500)
Net amount of financial liabilities presented in the balance sheet | 170,426 | 155,653 | 133,340
Derivatives |  |  |
Financial assets offset in the consolidated balance sheets |  |  |
Gross amount of financial assets | 117,733 | 152,331 | 149,508
Gross amount of financial assets offset in the balance sheet | (55,447) | (82,559) | (87,883)
Net amount of financial assets presented in the balance sheet | 62,286 | 69,772 | 61,625
Reverse repurchase agreements |  |  |
Financial assets offset in the consolidated balance sheets |  |  |
Gross amount of financial assets | 217,509 | 189,034 | 179,580
Gross amount of financial assets offset in the balance sheet | (76,535) | (67,488) | (79,500)
Net amount of financial assets presented in the balance sheet | € 140,974 | € 121,546 | € 100,080

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- Definition The amount of financial assets set off against financial liabilities when an entity: (a) currently has a legally enforceable right to set off the recognised amounts; and (b) intends either to settle on a net basis, or to realise the asset and settle the liability simultaneously. [Refer: Financial assets; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 49 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_49&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2025-01-01 -Paragraph 13C -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_13C_b&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 49 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_49&doctype=Standard -URIDate 2025-03-27 + Details
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