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Events after the reporting date- Narrative (Details) € / shares in Units, £ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2025 GBP (£) | Dec. 31, 2024 EUR (€) € / shares | Dec. 31, 2023 EUR (€) | Dec. 31, 2030 | Dec. 31, 2025 EUR (€) | Dec. 31, 2024 GBP (£) | Dec. 31, 2024 EUR (€)
Events after reporting period [Line Items] |  |  |  |  |  |  |
Total amount accepted related to the repurchase of the subordinated hybrid bond |  |  | € 29,000,000 |  |  |  |
Acquisition of shares |  | € 7,169,540 |  |  |  |  |
New share buyback program to reduce share capital |  | 500,000,000 |  |  |  |  |
Issuance of bonds [Member] |  |  |  |  |  |  |
Events after reporting period [Line Items] |  |  |  |  |  |  |
Percentage of the nominal price in the issue price |  |  |  |  | 99.402% |  |
Net income earned that will be used for general corporate purposes |  | 495,000,000 |  |  |  |  |
Issuance of bonds [Member] | Maturities between 2026 and 2030 [Member] |  |  |  |  |  |  |
Events after reporting period [Line Items] |  |  |  |  |  |  |
Bonds issued |  |  |  |  |  |  | € 500,000,000
Borrowings, interest rate |  |  |  | 3.25% |  |  |
Corporate liquidity facility [Member] |  |  |  |  |  |  |
Events after reporting period [Line Items] |  |  |  |  |  |  |
Maximum limit of the possibility of having balances |  | € 900,000,000 |  |  |  |  |
AGS airports holdings limited [Member] |  |  |  |  |  |  |
Events after reporting period [Line Items] |  |  |  |  |  |  |
Proceeds from sale or issue of treasury shares | £ | £ 900 |  |  |  |  |  |
AGS airports holdings limited [Member] | AGS Divestment [Member] |  |  |  |  |  |  |
Events after reporting period [Line Items] |  |  |  |  |  |  |
Percentage of sale of all participation |  |  |  |  | € 1 |  |
Proceeds from sale or issue of treasury shares | £ | 900 |  |  |  |  |  |
Capital gain transaction price |  |  |  |  | € 297,000,000 |  |
Ferrovial [Member] |  |  |  |  |  |  |
Events after reporting period [Line Items] |  |  |  |  |  |  |
Proceeds from sale or issue of treasury shares | £ | 450 |  |  |  |  |  |
Ferrovial [Member] | Treasury share buy back program [Member] |  |  |  |  |  |  |
Events after reporting period [Line Items] |  |  |  |  |  |  |
Total amount accepted related to the repurchase of the subordinated hybrid bond |  |  |  |  |  |  | € 94,000,000
Reduction of share capital average price per share | € / shares |  | € 41.30 |  |  |  |  |
Acquisition of shares |  |  | € 2,280,272 |  |  |  |
Ferrovial [Member] | AGS Divestment [Member] |  |  |  |  |  |  |
Events after reporting period [Line Items] |  |  |  |  |  |  |
Proceeds from sale or issue of treasury shares | £ | £ 450 |  |  |  |  |  |
FGP Topco limited [Member] | HAH 5.25% stake divestment [Member] |  |  |  |  |  |  |
Events after reporting period [Line Items] |  |  |  |  |  |  |
Percentage of the sale of all of its remaining shares |  |  |  |  |  | 5.25% | 5.25%
Approximate amount of the sale of all remaining shares | £ |  |  |  |  |  | £ 455 |

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