v3.26.1
Income Taxes - Summary of Income Tax Recognized Directly in Retained Earnings (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income tax related to equity instruments and other      
Equity instruments € 15 € (8) € 17
Other 1 7 1
Total income tax recognized directly in retained earnings € 16 € (1) € 18