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Parent Company Financial Statements (Details) - EUR (€) € in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Ferrovial SE Statements Financial Position [Line Items] |  |  |  |
Right-of-use assets | € 238 | € 196 | € 183 |
Deferred tax assets | 1,159 | 1,006 |  |
Non-current derivative financial assets | 221 | 254 |  |
Current trade receivables | 1,625 | 1,353 |  |
Current tax assets, current | 48 | 35 |  |
Other current receivables | 603 | 324 |  |
Cash and cash equivalents | 4,828 | 4,789 | € 5,130 | € 5,536
Other non-current provisions | 353 | 268 |  |
Non-current lease liabilities | 165 | 141 |  |
Non-current derivative financial liabilities | 71 | 99 |  |
Other non-current financial liabilities | 1,279 | 1,310 |  |
Current lease liabilities | 80 | 59 |  |
Current derivative financial liabilities | 61 | 34 |  |
Current trade payables | 1,781 | 1,698 |  |
Other current payables | 502 | 419 |  |
Current provisions | 958 | 1,011 |  |
Ferrovial SE as parent company [Member] |  |  |  |
Ferrovial SE Statements Financial Position [Line Items] |  |  |  |
Non current assets financial position for parent company | 13,167 | 9,642 |  |
Right-of-use assets | 3 | 4 |  |
Long term investments in group companies and associates | 12,815 | 9,525 |  |
Non current assets of equity instruments investments | 12,815 | 9,525 |  |
Other non current final assets financial position for parent company | 264 | 20 |  |
Deferred tax assets | 55 | 73 |  |
Non-current derivative financial assets | 30 | 20 |  |
Currents assets financial position for parent company | 601 | 736 |  |
Current assets for sale in parent company | 0 | 0 |  |
Current trade receivables | 203 | 154 |  |
Current receivables due from associates | 129 | 83 |  |
Current tax assets, current | 19 | 19 |  |
Other current receivables | 53 | 49 |  |
Other current receivables financial position for parent company | 4 | 3 |  |
Short term investments in group entities and associates | 218 | 473 |  |
Current prepayments and other current assets | 3 | 2 |  |
Cash and cash equivalents financial position for parent company | 175 | 107 |  |
Total assets financial position for parent company | 13,768 | 10,378 |  |
Total equity in financial position for parent company | 6,422 | 4,102 |  |
Issued capital | 7 | 7 |  |
Share premium | 4,316 | 4,316 |  |
Treasury shares | (79) | (78) |  |
Measurement adjustments | (10) | (9) |  |
Retained earnings | 2,188 | (134) |  |
Non current liabilities in financial position for parent company | 6,090 | 5,333 |  |
Other non-current provisions | 89 | 89 |  |
Non-current lease liabilities |  | 4 |  |
Debentures and borrowings in financial position for parent company | 556 | 791 |  |
Non-current derivative financial liabilities | 0 | 13 |  |
Non current liabilities payables to group companies | 5,433 | 4,425 |  |
Non current deferred tax liabilities | 0 | 0 |  |
Other non-current financial liabilities | 12 | 11 |  |
Current liabilities in financial position for parent company | 1,256 | 943 |  |
Current lease liabilities | 0 | 0 |  |
Current debentures and borrowings in financial position for parent company | 507 | 504 |  |
Current debentures and bonds liabilities | 255 | 504 |  |
Current debt securities and bank borrowings | 252 | 0 |  |
Current derivative financial liabilities | 0 | 0 |  |
Current payables to Group companies liabilities | 686 | 374 |  |
Current trade and other current payables in financial position for parent company | 62 | 64 |  |
Current trade payables | 10 | 11 |  |
Other current payables | 24 | 10 |  |
Other trade payables of group companies and associates for liabilities | 10 | 18 |  |
Current tax liabilities | 19 | 25 |  |
Current provisions | 1 | 1 |  |
Total Liabilities in financial position for parent company | € 13,768 | € 10,378 |  |

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