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Investment in associates and joint ventures - Summary of investments in associates and joint ventures (Details) - EUR (€) € in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Disclosure of investments in associates and joint ventures [Line items] |  |
Balance sheet value | € 1,459 | € 1,509
Total assets | 1,047,610 | 980,299
Total liabilities | € 992,105 | € 924,671
TMB Public Company Limited | TMBThanachart Bank Public Company Limited |  |
Disclosure of investments in associates and joint ventures [Line items] |  |
Interest held (%) | 23.00% | 23.00%
Fair value of listed invest-ments | € 964 | € 976
Balance sheet value | 1,120 | 1,128
Total assets | 45,927 | 46,666
Total liabilities | 39,953 | 40,776
Total income | 449 | 1,386
Total expenses | 322 | 943
Other investments in associates and joint ventures |  |
Disclosure of investments in associates and joint ventures [Line items] |  |
Balance sheet value | € 339 | € 381

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