v3.26.1
Cash and Cash Equivalents - Disclosure of Detailed Information of Cash Flow Statement (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statement of cash flows [abstract]      
Net cash flows from operating activities € 434 € 762 € 864
Net cash flows from investing activities 1,010 300 (1,996)
Net cash flows from financing activities (2,035) (1,755) (3,241)
Net increase / (decrease) in cash and cash equivalents € (591) € (694) € (4,373)