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Subordinated loans - Additional information (Details) € in Millions, £ in Millions, $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 USD ($) | Apr. 30, 2023 EUR (€) | Mar. 31, 2023 USD ($) | Dec. 31, 2023 EUR (€) | Dec. 31, 2022 EUR (€) | Dec. 31, 2021 EUR (€) | Feb. 28, 2023 EUR (€) | Feb. 28, 2023 GBP (£) | Feb. 28, 2023 USD ($)
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |
Subordinated loans |  |  |  | € 15,401 | € 15,786 |  |  |  |
Redemption of subordinated loans |  |  |  | 90,574 | 82,844 | € 76,150 |  |  |
Interest expense on subordinated loans |  |  |  | 708 | 648 | € 571 |  |  |
Fixed Rate Subordinated Tier 2 Notes (EUR) |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |
Subordinated loans |  |  |  |  |  |  | € 500 |  |
Borrowings, interest rate |  |  |  |  |  |  | 5.00% | 5.00% | 5.00%
Fixed Rate Subordinated Tier 2 Notes (GBP) |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |
Subordinated loans | £ |  |  |  |  |  |  |  | £ 750 |
Borrowings, interest rate |  |  |  |  |  |  | 6.25% | 6.25% | 6.25%
Perpetual AT1 Contingent Convertible Capital Securities |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |
Subordinated loans | $ |  |  |  |  |  |  |  |  | $ 1,000
Borrowings, interest rate |  |  |  |  |  |  | 7.50% | 7.50% | 7.50%
Subordinated Tier 2 Notes |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |
Borrowings, interest rate | 5.80% | 3.00% | 4.70% |  |  |  |  |  |
Redemption of subordinated loans | $ 810 | € 1,000 | $ 1,250 |  |  |  |  |  |
Subordinated Loans |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |
Interest expense on subordinated loans |  |  |  | € 708 | € 648 |  |  |  |
Subordinated Loans | Average |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  | 4.44% | 4.01% |  |  |  |

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- Definition The cash outflow for repayments of bonds, notes and debentures. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 17 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_17&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of liabilities that are subordinate to other liabilities with respect to claims. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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