Financial risk management and financial instruments - Summary of Changes in Investments (Details) - EUR (€) € in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Disclosure Of Financial Risk Management And Financial Instruments [Line Items] | |||
| At January 1 | € 1,215 | ||
| At December 31 | 1,635 | € 1,215 | |
| Tencent Music Entertainment Group | |||
| Disclosure Of Financial Risk Management And Financial Instruments [Line Items] | |||
| At January 1 | 1,154 | 1,094 | € 852 |
| Changes in fair value recorded in other comprehensive income | 396 | 60 | 242 |
| At December 31 | € 1,550 | € 1,154 | € 1,094 |