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Accounting policies - Consolidated statement of cash flows (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disclosure Of Accounting Policies [Abstract] |  |  |
Interest received | € 109,840 | € 117,046 | € 101,029
Interest paid | € 57,737 | € 61,091 | € 50,954

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- Definition The cash outflow for interest paid, classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2025-01-01 -Paragraph 31 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_31&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The cash inflow from interest received, classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2025-01-01 -Paragraph 31 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_31&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Disclosure Of Accounting Policies Abstract [Abstract] + References No definition available. + Details
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