XML 304 R136.htm IDEA: XBRL DOCUMENT v3.25.0.1

Profit/(loss) from discontinued operations - Narrative (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Detailed information about profit loss from discontinued operations [Line Items]
Profit (loss) from discontinued operations	€ 14	€ 16	€ 64
Discontinued operations of the company [Member] | Service division [Member]
Detailed information about profit loss from discontinued operations [Line Items]
Profit (loss) from discontinued operations	€ 14	€ 16	64
Discontinued operations of the company [Member] | Service division [Member] | Divestment amey busines UK [Member]
Detailed information about profit loss from discontinued operations [Line Items]
Net capital gain			58
Transfer to the income statement of currency translation differences accumulated in equity			(156)
Interest rate hedge derivatives			€ (15)

X

- Definition

Detailed information about profit loss from discontinued operations

+ References

No definition available.

+ Details

Name:	fer_DetailedInformationAboutProfitLossFromDiscontinuedOperationsLineItems
Namespace Prefix:	fer_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Interest rate hedge derivatives

+ References

No definition available.

+ Details

Name:	fer_InterestRateHedgeDerivatives
Namespace Prefix:	fer_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Net capital gain

+ References

No definition available.

+ Details

Name:	fer_NetCapitalGain
Namespace Prefix:	fer_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Transfer to the income statement of currency translation differences accumulated in equity

+ References

No definition available.

+ Details

Name:	fer_TransferToTheIncomeStatementOfCurrencyTranslationDifferencesAccumulatedInEquity
Namespace Prefix:	fer_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The profit (loss) from discontinued operations. [Refer: Discontinued operations [member]; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 5
-IssueDate 2024-01-01
-Paragraph 33
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_a&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph B12
-Subparagraph b
-Clause vii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B12_b_vii&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 98
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_e&doctype=Standard
-URIDate 2024-03-27

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 82
-Subparagraph ea
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82_ea&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ProfitLossFromDiscontinuedOperations
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	fer_ContinuingAndDiscontinuedOperationsOfTheCompanyAxis=fer_DiscontinuedOperationsOfTheCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SegmentsAxis=fer_ServiceDivisionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	fer_DivestmentAndSalesRelatedToDiscontinuedOperationsAxis=fer_DivestmentAmeyBusinesUKMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: