Other non-operating income / expenses - Schedule of Components of Other Non-Operating Income / Expenses (Detail) - EUR (€) € in Millions |
12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Other non-operating income | |||||||
| Income from structured financing | € 5 | € 17 | € 0 | ||||
| Fair value increases on financial assets | 3 | [1] | 5 | [1] | 0 | ||
| Total | 8 | 22 | 0 | ||||
| Other non-operating expenses | |||||||
| Fair value losses on other financial assets | (15) | [1] | (1) | [1] | 0 | ||
| Total | € (15) | € (1) | € 0 | ||||
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