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Accounting Policies Property Plan And Equipment - Narrative (Details) - EUR (€) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Percentage of ownership interest previously |  | 50.00% |  |
Consolidated groups assets contributed by joint operations |  | € 1,057,000,000 | € 1,173,000,000 | € 428,000,000
Consolidated groups profit loss contributed by joint operations |  | 157,000,000 | 36,000,000 | 40,000,000
Consolidated groups revenue contributed by joint operations |  | 1,581,000,000 | 1,401,000,000 | 1,242,000,000
Revenue | € 9,147,000,000 | 9,147,000,000 | 8,514,000,000 | 7,551,000,000
Net depreciation charges related to provisions for replacements under IFRIC12 |  | 37,000,000 | 24,000,000 |
Impact on the classification of one of the financial debts |  | 84,000,000 |  |
Profit attributable to the companys holdings in the concession operators and not eliminated on consolidation |  | (14,206,000) | (34,942,000) | (60,507,000)
Recognition of a capital gain |  | € 19,000,000 |  |
Percentage holding the majority of voting rights |  | 49.00% |  |
Percentage of economic rights and majority of voting rights |  | 100.00% |  |
IFRIC 12 [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Borrowing costs associated with the financing of concessions to which the financial asset model |  |  | (7,000,000) | (9,000,000)
Financial income from services provided by the concession operators that apply the financial asset model [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Revenue |  | € 9,000,000 | 10,000,000 | 10,000,000
Financial income from services provided by the concession operators that apply the financial asset model [Member] | IFRIC 12 [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Revenue |  | 9,000,000 | 10,000,000 | 10,000,000
Borrowing costs associated with the financing of concessions to which the financial asset model |  | € (6,000,000) |  |
IRB Infrastructure Trust (Private InvIT) [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Proportion of ownership interest in associate |  | 23.99% |  |
Total stake retain by Ferrovial for associates |  | 34.10% |  |
FGP Topco limited [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Proportion of ownership interest in associate |  | 19.75% |  |
Percentage of the ferrovials stake in the asset |  | 5.25% |  |
Percentage of the sale of the FGP Topco |  | 19.75% |  |
Total stake retain by Ferrovial for associates |  | 25.00% |  |
FGP Topco limited [Member] | December [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Percentage of the ferrovials stake in the asset |  | 19.75% |  |
407 International Inc [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Proportion of ownership interest in associate |  | 43.23% |  |
JFKNTO sponsor aggregator LLC [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Proportion of ownership interest in associate |  | 49.00% |  |
Toll roads division [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Revenue | € 1,256,000,000 | € 1,256,000,000 | € 1,085,000,000 | € 780,000,000
Recognition of a capital gain |  | € 19,000,000 |  |
Percentage holding the majority of voting rights |  | 51.00% |  |
Toll roads division [Member] | Cintra OSARS [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Proportion of ownership interest in associate |  | 50.00% |  |
Toll roads division [Member] | Cintra Slovakia Ltd [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Proportion of ownership interest in associate |  | 35.00% |  |
Toll roads division [Member] | Cintra Toowoomba Ltd [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Proportion of ownership interest in associate |  | 40.00% |  |
Toll roads division [Member] | IRB Infrastructure Trust (Private InvIT) [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Percentage adquired by Ferrovial subsidiary of the buyers capital |  | 23.99% |  |
Toll roads division [Member] | 407 International Inc [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Proportion of ownership interest in associate |  | 43.23% |  |
Toll roads division [Member] | JFKNTO sponsor aggregator LLC [Member] |  |  |  |
Detail of information about summary of significant accounting policies [Line Items] |  |  |  |
Proportion of ownership interest in associate |  | 49.00% |  |

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