Cash and cash equivalents - Disclosure of cash and cash equivalents (Details) - EUR (€) € in Millions	Dec. 31, 2024	Dec. 31, 2023
Subclassifications of assets, liabilities and equities [abstract]
Cash at banks	€ 9,408	€ 8,981
Money market securities measured at FVTPL	19,127	17,691
Other cash equivalents	5,565	16,997
Total Cash and cash equivalents	€ 34,100	€ 43,669

The amount of cash balances held at banks.

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The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of cash and cash equivalents that the entity does not separately disclose in the same statement or note. [Refer: Cash and cash equivalents]

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A classification of cash equivalents representing short-term investments. [Refer: Cash equivalents]

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