Income Tax Expense - Summary of Difference Between Effective Tax Rate and Standard Corporate Income Tax Rate (Parenthetical) (Details) - EUR (€) € in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
| Current Tax Expense Related to Pillar Two | € 17 | € 52 |