Name:	cdlr_DisclosureOfCommitmentsAndPledgesLineItems
Namespace Prefix:	cdlr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Number of subsidiaries along with whom the company entered in to a borrowing facility.

No definition available.

Name:	cdlr_NumberOfSubsidiariesAlongWithWhomCompanyEnteredInToBorrowingFacility
Namespace Prefix:	cdlr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of vessels newbuilds of the company.

No definition available.

Name:	cdlr_NumberOfVesselsNewbuilds
Namespace Prefix:	cdlr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The sum of contract amount paid for building new vessels.

No definition available.

Name:	cdlr_SumOfContractPaidForBuildingNewVessels
Namespace Prefix:	cdlr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The sum of contract amount paid for replacement of cranes.

No definition available.

Name:	cdlr_SumOfContractPaidForReplacementOfCranes
Namespace Prefix:	cdlr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Threshold minimum percentage of voting and/or ordinary shares if gained control directly or indirectly by any person or group of persons (other than those specified) acting in concert, considered as change of control under the borrowings.

No definition available.

Name:	cdlr_ThresholdMinimumPercentageOfVotingAndOrOrdinarySharesConsideredAsChangeOfControl
Namespace Prefix:	cdlr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Total sum of the contract entered in to by the company for building new vessels.

No definition available.

Name:	cdlr_TotalSumOfContractForBuildingNewVessels
Namespace Prefix:	cdlr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Total sum of the contract entered in to by the company for building new vessels, that is to be paid in EUR.

No definition available.

Name:	cdlr_TotalSumOfContractForBuildingNewVesselsToBePaidInEuro
Namespace Prefix:	cdlr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Total sum of the contract entered in to by the company for building new vessels, that is to be paid in USD.

No definition available.

Name:	cdlr_TotalSumOfContractForBuildingNewVesselsToBePaidInUnitedStatesDollars
Namespace Prefix:	cdlr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Total sum of the contract entered in to by the company for replacement of cranes.

No definition available.

Name:	cdlr_TotalSumOfContractForReplacementOfCranes
Namespace Prefix:	cdlr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of property, plant and equipment pledged as security for liabilities. [Refer: Property, plant and equipment]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2023-01-01
-Paragraph 74
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_74_a&doctype=Standard
-URIDate 2023-03-23

Name:	ifrs-full_PropertyPlantAndEquipmentPledgedAsSecurity
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=cdlr_WindOspreyWindOrcaVesselsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=cdlr_PClassVesselsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=cdlr_AClassVesselsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=cdlr_MClassVesselsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_CurrencyAxis=currency_EUR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_BorrowingsByNameAxis=cdlr_NewSeniorSecuredCreditAndGuaranteeFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=cdlr_WindOrcaWindOspreyWindScyllaAndWindZaratanVesselsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: