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Equity (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Distribution of ferrovial individual profit loss [Line Items] |  |  |
Profit (loss) | € 3,490 | € 511 | € 305
Issued capital [member] |  |  |
Distribution of ferrovial individual profit loss [Line Items] |  |  |
Profit (loss) | 0 | 0 | € 0
Ferrovial SA [Member] |  |  |
Distribution of ferrovial individual profit loss [Line Items] |  |  |
Profit (loss) | € 3,270 | 3,270 |
Proposed distributionr prior year losses |  | € 3,270 |
Ordinary shares [member] | Issued capital [member] |  |  |
Movements of share capital [Line Items] |  |  |
Number of shares outstanding |  | 740,688,365 | 727,443,261

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