XML 359 R191.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Equity - Narrative (Details) € / shares in Units, $ in Billions | 12 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2024 EUR (€) € / shares shares | Dec. 31, 2023 EUR (€) € / shares shares | Dec. 31, 2022 EUR (€) shares | Dec. 31, 2025 EUR (€) | Dec. 31, 2024 USD ($) shares | Nov. 30, 2024 EUR (€) € / shares shares | Jul. 31, 2024 EUR (€) shares | Nov. 30, 2023 EUR (€) shares | Nov. 01, 2023 shares | Jul. 31, 2023 EUR (€) shares | Dec. 31, 2021 EUR (€)
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total other comprehensive income reclassified to profit or loss, net of tax | € (15,000,000) | € 8,000,000 | € 131,000,000 |  |  |  |  |  |  |  |
Remuneration of shareholder | € 831,000,000 | € 250,000,000 | 578,000,000 |  |  |  |  |  |  |  |
Percentage of acceptance obtained by the company in relation to the amount of theIssuance of the subordinated hybrid bond |  | 94.28% |  |  |  |  |  |  |  |  |
Total amount related to the repurchase of the subordinated hybrid bond |  | € 500,000,000 |  |  |  |  |  |  |  |  |
The costs of the bond issue and the accrued interest and coupon payment during the period |  | 471,000,000 |  |  |  |  |  |  |  |  |
Total amount accepted related to the repurchase of the subordinated hybrid bond |  | € 29,000,000 |  |  |  |  |  |  |  |  |
Percentage of the Azores highway sold to the infrastructure funds Horizon and RiverRock |  | 89.20% |  |  |  |  |  |  |  |  |
Percentage of rijn capital BV with an ownershipinterest of over 10% in ferrovials share capital | 10.00% |  |  |  | 10.00% |  |  |  |  |  |
Equity | € 8,120,000,000 | € 5,879,000,000 | 6,473,000,000 |  |  |  |  |  |  |  | € 5,946,000,000
Purchase of treasury shares | 26,756,284 |  |  |  |  |  |  |  |  |  |
Profit (loss) | 3,490,000,000 | 511,000,000 | 305,000,000 |  |  |  |  |  |  |  |
Share capital increase attributable to noncontrolling interests | 22,000,000 | 117,000,000 |  |  |  |  |  |  |  |  |
Impact on hedge reserves | 129,000,000 | 6,000,000 |  |  |  |  |  |  |  |  |
Maximun shares | $ |  |  |  |  | $ 0.6 |  |  |  |  |  |
Increase (decrease) in equity | 2,309,000,000 | (467,000,000) |  |  |  |  |  |  |  |  |
Currency translation differences | 139,000,000 | (125,000,000) |  |  |  |  |  |  |  |  |
Cash and cash equivalents | € 4,828,000,000 | 4,789,000,000 | 5,130,000,000 |  |  |  |  |  |  |  | 5,536,000,000
Percentage of shares of the Company as a maximum of the share capital | 5.00% |  |  |  |  |  |  |  |  |  |
Price paid for the purchase of shares | € 272,000,000 |  |  |  |  |  |  |  |  |  |
Acquisition of shares | 7,169,540 |  |  |  |  |  |  |  |  |  |
Reduction of issued capital | 200,000 |  |  |  |  |  |  |  |  |  |
19,75% HAH Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Currency translation differences and debt hedging derivatives | 0.1975 |  |  |  |  |  |  |  |  |  |
Currency translation differences and debt hedging derivatives related to the sale proceeds | 55,000,000 |  |  |  |  |  |  |  |  |  |
Currency translation difference and debt hedging derivatives related to the sale amount (II) | (84,000,000) |  |  |  |  |  |  |  |  |  |
Grupo Serveo, S.L. |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Currency translation differences and debt hedging derivatives | 0.2478 |  |  |  |  |  |  |  |  |  |
Ferrovial SA [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Profit (loss) | 3,270,000,000 | 3,270,000,000 |  |  |  |  |  |  |  |  |
Ferrovial SA [Member] | Cash flow impact [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Remuneration of shareholder | 831,000,000 |  |  |  |  |  |  |  |  |  |
Ferrovial SE [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interim scrip dividend | 0.3033 |  |  |  |  |  |  |  |  |  |
I77 mobility partners [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share capital increase attributable to noncontrolling interests | 0 | 0 |  |  |  |  |  |  |  |  |
I66 mobility partners [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share capital increase attributable to noncontrolling interests | 0 | 26,000,000 |  |  |  |  |  |  |  |  |
FAM construction LLC [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share capital increase attributable to noncontrolling interests | 22,000,000 | 60,000,000 |  |  |  |  |  |  |  |  |
Dalaman international airport [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share capital increase attributable to noncontrolling interests | 0 | 0 |  |  |  |  |  |  |  |  |
Equity swaps corporate [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Variation of net financial derivatives fair value effect on profit and loss | 17,000,000 | 25,000,000 |  |  |  |  |  |  |  |  |
May [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  |  |  |  | 4,719,782 |  |  |  |
May [Member] | Ferrovial SE [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Price paid for the purchase of shares | 361,000,000 |  |  |  |  |  |  |  |  |  |
Acquisition of shares | € 10,355,493 |  |  |  |  |  |  |  |  |  |
June [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares | 120,211 |  |  |  | 120,211 |  |  |  |  |  |
Amount of the free allotment rights purchased |  |  |  |  |  |  | € 48,000,000 |  |  |  |
Percentage of Ferrovial shares outstanding received the dividend in the form of new Ferrovial shares. | 78.21% |  |  |  | 78.21% |  |  |  |  |  |
December [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares | 80,694 |  |  |  | 80,694 |  |  |  |  |  |
Amount of the free allotment rights purchased |  |  |  |  |  | € 57,000,000 |  |  |  |  |
Price paid for the purchase of shares | € 339,000,000 | 52,000,000 |  |  |  |  |  |  |  |  |
Acquisition of shares | € 9,231,251 | 2,000,000 |  |  |  |  |  |  |  |  |
Percentage of Ferrovial shares outstanding received the dividend in the form of new Ferrovial shares. | 82.66% |  |  |  | 82.66% |  |  |  |  |  |
December [Member] | Cash flow impact [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents | € 25,000,000 |  |  |  |  |  |  |  |  |  |
December [Member] | Ferrovial SE [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Price paid for the purchase of shares |  | 62,000,000 |  |  |  |  |  |  |  |  |
Acquisition of shares |  | 1,900,000 |  |  |  |  |  |  |  |  |
November [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  |  |  | 7,402,412 |  |  | 8,193,687 |  |
Amount of the free allotment rights purchased |  |  |  |  |  |  |  | € 78,000,000 |  |  |
Price per share related to the free allotment rights purchased | € / shares |  |  |  |  |  | € 0.4597 |  |  |  |  |
July [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  |  |  |  |  |  |  | 5,051,417 |
Amount of the free allotment rights purchased |  |  |  |  |  |  |  |  |  | € 58,000,000 |
Interest rate swap contract to cover the bank debt obtained by Ferrovial SE in 2022 [Member] | Ferrovial SA [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total other comprehensive income reclassified to profit or loss, net of tax |  | (9,000,000) |  |  |  |  |  |  |  |  |
Currency translation differences relating of the divestment in IRB [Member] | IRB infrastructure developers limited [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total stake retain by Ferrovial for associates | 5.00% |  |  |  |  |  |  |  |  |  |
Impact accumulated in reserves of the pre hedged bond issuance initially planned for 2018 [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total other comprehensive income reclassified to profit or loss, net of tax |  | 6,000,000 |  |  |  |  |  |  |  |  |
United States of America, Dollars |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
The price market value of the treasury shares held | € 33,000,000 | (52,000,000) |  |  |  |  |  |  |  |  |
Canada, Dollars |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Currency translation differences | € (12,000,000) | € (34,000,000) |  |  |  |  |  |  |  |  |
India, Rupees |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Par value per share | € / shares | € 57.24 | € 41.55 |  |  |  |  |  |  |  |  |
Currency translation differences | € 18,000,000 |  |  |  |  |  |  |  |  |  |
Fully consolidated companies [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impact on hedge reserves | 104,000,000 | € (9,000,000) |  |  |  |  |  |  |  |  |
Equity accounted companies [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impact on hedge reserves | 21,000,000 | 17,000,000 |  |  |  |  |  |  |  |  |
Companies held for sale and discontinued operations [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impact on hedge reserves |  | (5,000,000) |  |  |  |  |  |  |  |  |
Equity attributable to owners of parent [member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total other comprehensive income reclassified to profit or loss, net of tax | (15,000,000) | 8,000,000 | 131,000,000 |  |  |  |  |  |  |  |
Total amount accepted related to the repurchase of the subordinated hybrid bond |  | 114,000,000 |  |  |  |  |  |  |  |  |
Equity | 6,075,000,000 | 3,766,000,000 | 4,233,000,000 |  |  |  |  |  |  |  | 4,156,000,000
Impact of share capital reduction reflecting the redemption of treasury shares recognized against unrestricted reserves | 4,316,000,000 |  |  |  |  |  |  |  |  |  |
Purchase of treasury shares | € 972,000,000 | 3,900,000 |  |  |  |  |  |  |  |  |
Reduction of share capital average price per share | € / shares | € 29.17 |  |  |  |  |  |  |  |  |  |
Share capital ordinary shares | shares | 7,753,399 |  |  |  | 7,753,399 |  |  |  |  |  |
The price market value of the treasury shares held | € 315,000,000 | 157,000,000 |  |  |  |  |  |  |  |  |
Profit (loss) | 3,239,000,000 | 341,000,000 | 188,000,000 |  |  |  |  |  |  |  |
Impact on hedge reserves | 125,000,000 | 3,000,000 |  |  |  |  |  |  |  |  |
Currency translation differences | € (33,000,000) | (83,000,000) |  |  |  |  |  |  |  |  |
First recalculation annual coupon subordinated perpetual bond issued in 2017 through ferrovial netherlands BV | 3634.00% |  |  |  |  |  |  |  |  |  |
Non-controlling interests [member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total other comprehensive income reclassified to profit or loss, net of tax | € 0 | 0 | 0 |  |  |  |  |  |  |  |
Equity | 2,045,000,000 | 2,113,000,000 | 2,240,000,000 |  |  |  |  |  |  |  | 1,790,000,000
Profit (loss) | 251,000,000 | 170,000,000 | 117,000,000 |  |  |  |  |  |  |  |
Impact on hedge reserves | 4,000,000 | 3,000,000 |  |  |  |  |  |  |  |  |
Currency translation differences | 106,000,000 | (42,000,000) |  |  |  |  |  |  |  |  |
Treasury shares [member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total other comprehensive income reclassified to profit or loss, net of tax | € 0 | € 0 | € 0 |  |  |  |  |  |  |  |
Number of shares outstanding | shares | 7,753,399 | 4,759,310 | 1,168,290 |  | 7,753,399 |  |  |  |  |  |
Equity | € (78,000,000) | € (78,000,000) | € (26,000,000) |  |  |  |  |  |  |  | (124,000,000)
Profit (loss) | € 0 | € 0 | 0 |  |  |  |  |  |  |  |
Treasury shares [member] | Ferrovial SE [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum amount of shares approved in the treasury share buy back program |  |  |  |  |  |  |  | € 500,000,000 |  |  |
Maximum number of shares approved in the treasury share buy back program | shares |  |  |  |  |  |  |  | 34,000,000 |  |  |
Treasury shares [member] | Number of shares purchased [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares outstanding | shares | 26,756,284 | 3,900,000 |  |  | 26,756,284 |  |  |  |  |  |
Treasury shares [member] | Number of shares applied to purpose [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares outstanding | shares | (23,762,195) | (308,980) |  |  | (23,762,195) |  |  |  |  |  |
Treasury shares [member] | May [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum amount of shares approved in the treasury share buy back program |  |  |  | € 300,000,000 |  |  |  |  |  |  |
Maximum total investment amount |  |  |  | € 600,000,000 |  |  |  |  |  |  |
Treasury shares [member] | April [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum amount of shares approved in the treasury share buy back program | € 500,000,000 |  |  |  |  |  |  |  |  |  |
Cash equivalents | 550,000,000 |  |  |  |  |  |  |  |  |  |
Maximun shares | 37,000,000 |  |  |  |  |  |  |  |  |  |
Treasury shares [member] | August [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum amount of shares approved in the treasury share buy back program | 300,000,000 |  |  |  |  |  |  |  |  |  |
Maximun shares | 30,000,000 |  |  |  |  |  |  |  |  |  |
Treasury shares [member] | December [Member] | Cash flow impact [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interim scrip dividend | 0.0346 |  |  |  |  |  |  |  |  |  |
Reserves [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total other comprehensive income reclassified to profit or loss, net of tax | 0 | € 0 | 0 |  |  |  |  |  |  |  |
Equity | 2,536,000,000 |  | 4,383,000,000 |  |  |  |  |  |  |  | 4,707,000,000
Profit (loss) | € 3,239,000,000 | € 341,000,000 | 188,000,000 |  |  |  |  |  |  |  |
Share capital [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Par value per share | € / shares | € 0.01 |  |  |  |  |  |  |  |  |  |
Percentage of rijn capital BV with an ownershipinterest of over 10% in ferrovials share capital | 21.31% | 20.56% |  |  | 21.31% |  |  |  |  |  |
Share capital [Member] | Board of Directors Chairman |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of rijn capital BV with an ownershipinterest of over 10% in ferrovials share capital | 10.03% |  |  |  | 10.03% |  |  |  |  |  |
Share capital [Member] | Ordinary shares [member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Issued capital | € 7,295,600 | € 7,406,884 |  |  |  |  |  |  |  |  |
Number of shares outstanding | shares | 729,559,951 | 740,688,365 |  |  | 729,559,951 |  |  |  |  |  |
Share premium and merger premium [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total other comprehensive income reclassified to profit or loss, net of tax | € (13,000,000) |  |  |  |  |  |  |  |  |  |
Share premium | 4,426,000,000 |  |  |  |  |  |  |  |  |  |
Impact of share capital reduction reflecting the redemption of treasury shares recognized against unrestricted reserves |  | € 4,316,000,000 |  |  |  |  |  |  |  |  |
Measurement Adjustment [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total other comprehensive income reclassified to profit or loss, net of tax | (15,000,000) | 8,000,000 | 131,000,000 |  |  |  |  |  |  |  |
Equity | (706,000,000) | (849,000,000) | (777,000,000) |  |  |  |  |  |  |  | € (1,299,000,000)
Cumulative impact of other comprehensive income in equity | (534,000,000) |  |  |  |  |  |  |  |  |  |
Measurement adjustments related to currency translation differences accumulated in reserves | (311,000,000) |  |  |  |  |  |  |  |  |  |
Measurement adjustments related to pension plans | (455,000,000) |  |  |  |  |  |  |  |  |  |
Measurement adjustments related to derivatives | 232,000,000 |  |  |  |  |  |  |  |  |  |
Profit (loss) | € 0 | 0 | € 0 |  |  |  |  |  |  |  |
Retained earnings and other reserves [Member] |  |  |  |  |  |  |  |  |  |  |
Detail of information about equity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity |  | € 370,000,000 |  |  |  |  |  |  |  |  |

X
- Definition Acquisition of shares + References No definition available. + Details
Name: | fer_AcquisitionOfShares
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of the free allotment rights purchased + References No definition available. + Details
Name: | fer_AmountOfTheFreeAllotmentRightsPurchased
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cumulative impact of other comprehensive income in equity + References No definition available. + Details
Name: | fer_CumulativeImpactOfOtherComprehensiveIncomeInEquity
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Currency translation difference and debt hedging derivatives related to the sale amount + References No definition available. + Details
Name: | fer_CurrencyTranslationDifferenceAndDebtHedgingDerivativesRelatedToTheSaleAmount
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Currency translation difference and debt hedging derivatives related to the sale amount (II) + References No definition available. + Details
Name: | fer_CurrencyTranslationDifferenceAndDebtHedgingDerivativesRelatedToTheSaleAmountII
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Currency translation differences + References No definition available. + Details
Name: | fer_CurrencyTranslationDifferences
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Currency translation differences and debt hedging derivatives + References No definition available. + Details
Name: | fer_CurrencyTranslationDifferencesAndDebtHedgingDerivatives
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Detail of information about equity + References No definition available. + Details
Name: | fer_DetailOfInformationAboutEquityLineItems
Namespace Prefix: | fer_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition First recalculation of the annual coupon for the subordinated perpetual bond through Ferrovial Netherlands BV + References No definition available. + Details
Name: | fer_FirstRecalculationOfTheAnnualCouponForTheSubordinatedPerpetualBondThroughFerrovialNetherlandsBV
Namespace Prefix: | fer_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Impact of share capital reduction reflecting the redemption of treasury shares recognized against unrestricted reserves + References No definition available. + Details
Name: | fer_ImpactOfShareCapitalReductionReflectingTheRedemptionOfTreasurySharesRecognizedAgainstUnrestrictedReserves
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Impact on hedge reserves + References No definition available. + Details
Name: | fer_ImpactOnHedgeReserves
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Interim scrip dividend + References No definition available. + Details
Name: | fer_InterimScripDividend
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum amount of shares approved in the treasury share buy back program + References No definition available. + Details
Name: | fer_MaximumAmountOfSharesApprovedInTheTreasuryShareBuyBackProgram
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum number of shares approved in the treasury share buy back program + References No definition available. + Details
Name: | fer_MaximumNumberOfSharesApprovedInTheTreasuryShareBuyBackProgram
Namespace Prefix: | fer_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum total investment amount + References No definition available. + Details
Name: | fer_MaximumTotalInvestmentAmount
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximun shares + References No definition available. + Details
Name: | fer_MaximunShares
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Measurement adjustments related to currency translation differences accumulated in reserves + References No definition available. + Details
Name: | fer_MeasurementAdjustmentsRelatedToCurrencyTranslationDifferencesAccumulatedInReserves
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Measurement adjustments related to derivatives + References No definition available. + Details
Name: | fer_MeasurementAdjustmentsRelatedToDerivatives
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Measurement adjustments related to pension plans + References No definition available. + Details
Name: | fer_MeasurementAdjustmentsRelatedToPensionPlans
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage of acceptance obtained by the company in relation to the amount of theIssuance of the subordinated hybrid bond + References No definition available. + Details
Name: | fer_PercentageOfAcceptanceObtainedByTheCompanyInRelationToTheAmountOfTheIssuanceOfTheSubordinatedHybridBond
Namespace Prefix: | fer_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of Ferrovial shares outstanding received the dividend in the form of new Ferrovial shares. + References No definition available. + Details
Name: | fer_PercentageOfFerrovialSharesOutstandingReceivedTheDividendInTheFormOfNewFerrovialShares.
Namespace Prefix: | fer_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of rijn capital BV with an ownershipinterest of over 10% in ferrovials share capital + References No definition available. + Details
Name: | fer_PercentageOfRijnCapitalBVWithAnOwnershipinterestOfOver10InFerrovialsShareCapital
Namespace Prefix: | fer_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of shares of the Company as a maximum of the share capital + References No definition available. + Details
Name: | fer_PercentageOfSharesOfTheCompanyAsAMaximumOfTheShareCapital
Namespace Prefix: | fer_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the Azores highway sold to the infrastructure funds Horizon and RiverRock + References No definition available. + Details
Name: | fer_PercentageOfTheAzoresHighwaySoldToTheInfrastructureFundsHorizonAndRiverRock
Namespace Prefix: | fer_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Price paid for the purchase of shares + References No definition available. + Details
Name: | fer_PricePaidForThePurchaseOfShares
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Price per share related to the free allotment rights purchased + References No definition available. + Details
Name: | fer_PricePerShareRelatedToTheFreeAllotmentRightsPurchased
Namespace Prefix: | fer_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reduction of share capital average price per share + References No definition available. + Details
Name: | fer_ReductionOfShareCapitalAveragePricePerShare
Namespace Prefix: | fer_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Remuneration of shareholder + References No definition available. + Details
Name: | fer_RemunerationOfShareholder
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Share capital increase attributable to noncontrolling interests + References No definition available. + Details
Name: | fer_ShareCapitalIncreaseAttributableToNoncontrollingInterests
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Share capital ordinary shares + References No definition available. + Details
Name: | fer_ShareCapitalOrdinaryShares
Namespace Prefix: | fer_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The costs of the bond issue and the accrued interest and coupon payment during the period + References No definition available. + Details
Name: | fer_TheCostsOfTheBondIssueAndTheAccruedInterestAndCouponPaymentDuringThePeriod
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The price market value of the treasury shares held + References No definition available. + Details
Name: | fer_ThePriceMarketValueOfTheTreasurySharesHeld
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total amount accepted related to the repurchase of the subordinated hybrid bond + References No definition available. + Details
Name: | fer_TotalAmountAcceptedRelatedToTheRepurchaseOfTheSubordinatedHybridBond
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total amount related to the repurchase of the subordinated hybrid bond + References No definition available. + Details
Name: | fer_TotalAmountRelatedToTheRepurchaseOfTheSubordinatedHybridBond
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total other comprehensive income reclassified to profit or loss, net of tax + References No definition available. + Details
Name: | fer_TotalOtherComprehensiveIncomeReclassifiedToProfitOrLossNetOfTax
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total stake retain by Ferrovial for associates + References No definition available. + Details
Name: | fer_TotalStakeRetainByFerrovialForAssociates
Namespace Prefix: | fer_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Variation of net financial derivatives fair value effect on profit and loss + References No definition available. + Details
Name: | fer_VariationOfNetFinancialDerivativesFairValueEffectOnProfitAndLoss
Namespace Prefix: | fer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B13 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CashAndCashEquivalents
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CashEquivalents
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The increase (decrease) in equity. [Refer: Equity] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ChangesInEquity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of residual interest in the assets of the entity after deducting all its liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2024-01-01 -Paragraph 24 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_24_a&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2024-01-01 -Paragraph 32 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_32_a_i&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2024-01-01 -Paragraph 93 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_a&doctype=Standard -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2024-01-01 -Paragraph 93 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2024-01-01 -Paragraph 93 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_b&doctype=Standard -URIDate 2024-03-27 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_e&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_Equity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The nominal value of capital issued. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_e&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_IssuedCapital
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of shares issued by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfSharesIssued
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfSharesOutstanding
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The nominal value per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 79 -Subparagraph a -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iii&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ParValuePerShare
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 18 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_18_b&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2024-01-01 -Paragraph 32 -Subparagraph a -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_32_a_ii&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2024-01-01 -Paragraph 24 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_24_b&doctype=Standard -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 28 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_b&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 23 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23&doctype=Standard -URIDate 2024-03-27 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B10 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B10_b&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 17 -IssueDate 2024-01-01 -Paragraph 113 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_113_b&doctype=Standard -URIDate 2024-03-27 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 81A -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_81A_a&doctype=Standard -URIDate 2024-03-27 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 106 -Subparagraph d -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ProfitLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The decrease in equity resulting from the purchase of treasury shares. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_PurchaseOfTreasuryShares
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The decrease in equity resulting from a reduction in issued capital. [Refer: Issued capital] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ReductionOfIssuedCapital
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount received or receivable from the issuance of the entity's shares in excess of nominal value. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_e&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_SharePremium
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | fer_CapitalGainsAndDisposalsAxis=fer_A1975HAHSaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_CapitalGainsAndDisposalsAxis=fer_GrupoServeoS.L.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=fer_FerrovialSAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_SubclassesOfFinancialInstrumentsAxis=fer_CashFlowImpactMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=fer_FerrovialSEMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_NoncontrollingInterestsEntitiesAxis=fer_I77MobilityPartnersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_NoncontrollingInterestsEntitiesAxis=fer_I66MobilityPartnersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_NoncontrollingInterestsEntitiesAxis=fer_FAMConstructionLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_NoncontrollingInterestsEntitiesAxis=fer_DalamanInternationalAirportMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=fer_EquitySwapsCorporateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_ShareCapitalIncreaseDuringTheYearAxis=fer_MayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_ShareCapitalIncreaseDuringTheYearAxis=fer_JuneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_ShareCapitalIncreaseDuringTheYearAxis=fer_DecemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_ShareCapitalIncreaseDuringTheYearAxis=fer_NovemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_ShareCapitalIncreaseDuringTheYearAxis=fer_JulyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_AmountsTransferredToTheIncomeStatementAxis=fer_InterestRateSwapContractToCoverTheBankDebtObtainedByFerrovialSEIn2022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_AmountsTransferredToTheIncomeStatementAxis=fer_CurrencyTranslationDifferencesRelatingOfTheDivestmentInIRBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_NoncontrollingInterestsEntitiesAxis=fer_IRBInfrastructureDevelopersLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_AmountsTransferredToTheIncomeStatementAxis=fer_ImpactAccumulatedInReservesOfThePreHedgedBondIssuanceInitiallyPlannedFor2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_USD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_CAD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_INR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_TypesOfCompaniesAxis=fer_FullyConsolidatedCompaniesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_TypesOfCompaniesAxis=fer_EquityAccountedCompaniesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_TypesOfCompaniesAxis=fer_CompaniesHeldForSaleAndDiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_EquityAttributableToOwnersOfParentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_NoncontrollingInterestsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_TreasurySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_NumberOfSharesTrasactionCompletedPurposeAxis=fer_NumberOfSharesPurchasedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_NumberOfSharesTrasactionCompletedPurposeAxis=fer_NumberOfSharesAppliedToPurposeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_ShareCapitalIncreaseDuringTheYearAxis=fer_AprilMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_ShareCapitalIncreaseDuringTheYearAxis=fer_AugustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=fer_ReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=fer_ShareCapitalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fer_MaximumAnnualRemunerationForAllTheMembersOfTheBoardOfDirectorsAxis=srt_BoardOfDirectorsChairmanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_OrdinarySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=fer_SharePremiumAndMergerPremiumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=fer_MeasurementAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=fer_RetainedEarningsAndOtherReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |