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Share buyback (Details) - EUR (€) € in Millions |  |  | 6 Months Ended
--- | --- | --- | ---
May 17, 2024 | Feb. 08, 2024 | Jun. 30, 2024 | Jun. 30, 2023
Disclosure of reserves within equity [line items] |  |  |  |  |
Share buyback program, authorized amount |  | € 850 |  |  |
Number of shares acquired (in shares) |  |  |  | 7,315,036 |
Repurchase of shares | [1] |  |  | € (375) | € (753)
Other reserves |  |  |  |  |
Disclosure of reserves within equity [line items] |  |  |  |  |
Repurchase of shares | [1] |  |  | € (375) | € (753)
Top of range |  |  |  |  |
Disclosure of reserves within equity [line items] |  |  |  |  |
Share buyback program, authorized amount |  |  | € 1,500 |  |
[1] | Repurchase of shares reflects the cost of acquiring ordinary shares as part of the share buyback program announced on 10 February 2022 and 8 February 2024.

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