Leases - Schedule Of Amounts Recognised In The Consolidated Income Statement Explanatory (Detail) - EUR (€) € in Millions |
1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Oct. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Schedule of amounts recognised in the consolidated income statement [Abstract] | ||||
| Selling gain/(loss) for finance leases | € 1 | € (1) | € 5 | € 0 |
| Finance income on the net investment in finance leases | € 1 | € 0 | € 0 | |