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Profit/(loss) - Narrative (Details) - EUR (€) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of detailed information about profit loss [Line Items] |  |  |  |
Profit (loss), attributable to owners of parent | € 3,239,000,000 | € 341,000,000 | € 188,000,000 |
Impairment and disposals impact on profit loss after tax | 2,191,000,000 | 37,000,000 | (6,000,000) |
Positive impacts |  | 43,000,000 |  |
Profit (loss) from discontinued operations | 14,000,000 | 16,000,000 | 64,000,000 |
Deferred tax liabilities due to withholding tax on the repatriation of future dividends from canada |  |  | 26,000,000 | € 41,000,000
Capital gains and disposals [Member] |  |  |  |
Disclosure of detailed information about profit loss [Line Items] |  |  |  |
Impairment and disposals impact on profit loss after tax | 2,192,000,000 | 41,000,000 | € (3,000,000) |
Serveo sale [Member] |  |  |  |
Disclosure of detailed information about profit loss [Line Items] |  |  |  |
Investment property completed | 0.24 |  |  |
Serveo sale [Member] | Capital gains and disposals [Member] |  |  |  |
Disclosure of detailed information about profit loss [Line Items] |  |  |  |
Impairment and disposals impact on profit loss after tax | 32,000,000 |  |  |
IRB sale 5% [Member] |  |  |  |
Disclosure of detailed information about profit loss [Line Items] |  |  |  |
Investment property completed | 0.05 |  |  |
IRB sale 5% [Member] | Capital gains and disposals [Member] |  |  |  |
Disclosure of detailed information about profit loss [Line Items] |  |  |  |
Impairment and disposals impact on profit loss after tax | € 116,000,000 |  |  |
Azores sale [Member] | Capital gains and disposals [Member] |  |  |  |
Disclosure of detailed information about profit loss [Line Items] |  |  |  |
Impairment and disposals impact on profit loss after tax |  | 41,000,000 |  |
Azores sale [Member] | Capital gains and disposals [Member] | PORTUGAL |  |  |  |
Disclosure of detailed information about profit loss [Line Items] |  |  |  |
Impairment and disposals impact on profit loss after tax |  | € 41,000,000 |  |
Heathrow Airport in London [Member] | Capital gains and disposals [Member] |  |  |  |
Disclosure of detailed information about profit loss [Line Items] |  |  |  |
Percentage of the ferrovials stake in the asset | 19.75% |  |  |
Impairment and disposals impact on profit loss after tax | € 2,570,000 |  |  |

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