The amount of subject to quarterly reductions in a term facility.

No definition available.

Name:	dht_BorrowingsSubjectToQuarterlyReductions
Namespace Prefix:	dht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of adjusted tangible net worth required to be maintained to fulfill Credit facility covenant.

+ References

No definition available.

+ Details

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Namespace Prefix:	dht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of adjusted tangible net worth to adjusted total assets value required to be maintained to fulfill Credit facility covenant.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of unencumbered consolidated cash to gross interest bearing debt required to be maintained to fulfill credit facility covenant.

+ References

No definition available.

+ Details

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Namespace Prefix:	dht_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of unencumbered consolidated cash required to be maintained to fulfill Credit facility covenant.

+ References

No definition available.

+ Details

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Namespace Prefix:	dht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Refers to the required percentage of the charter-free market value of the vessels to the borrowings under the covenants of the credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	dht_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period between issuance and maturity of credit facility, period between issuance and maturity of long-term debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	dht_CreditFacilityTerm
Namespace Prefix:	dht_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic installment payments including both interest and principal payments.

+ References

No definition available.

+ Details

Name:	dht_DebtInstrumentPeriodicInstallmentPayment
Namespace Prefix:	dht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of the required last periodic installment payments including both interest and principal payments.

+ References

No definition available.

+ Details

Name:	dht_DebtInstrumentPeriodicLastInstallmentPayment
Namespace Prefix:	dht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of prepayment of debt for final settlement.

+ References

No definition available.

+ Details

Name:	dht_DebtRepaymentFinalAmount
Namespace Prefix:	dht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The description of the frequency of periodic repayment of credit facility.

+ References

No definition available.

+ Details

Name:	dht_FrequencyOfPeriodicRepayment
Namespace Prefix:	dht_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of newbuilding contracts during the period..

+ References

No definition available.

+ Details

Name:	dht_NumberOfNewbuildingContracts
Namespace Prefix:	dht_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of VLCCs delivered during the period.

+ References

No definition available.

+ Details

Name:	dht_NumberOfVLCCsDelivered
Namespace Prefix:	dht_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of Commitment funding that the entity is obligated to repay towards financing activities.

+ References

No definition available.

+ Details

Name:	dht_SecuredCommitmentRelatedToFinancing
Namespace Prefix:	dht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of Uncommitted funding that the entity is obligated to repay towards financing activities.

+ References

No definition available.

+ Details

Name:	dht_UncommittedAccordion
Namespace Prefix:	dht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of voluntary prepayment of debt before installment term.

+ References

No definition available.

+ Details

Name:	dht_VoluntaryPrepaymentOfDebtBeforeInstallmentTerm
Namespace Prefix:	dht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_Borrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ifrs-full_BorrowingsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_7&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_BorrowingsAdjustmentToInterestRateBasis
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The maturity of borrowings. [Refer: Borrowings]

+ References

+ Details

Name:	ifrs-full_BorrowingsMaturity
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from borrowings obtained. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 17
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_17_c&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 17
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_17_d&doctype=Standard
-URIDate 2021-03-24

+ Details

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

- Details

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

- Details

Name:	ifrs-full_CreationDateAxis=dht_PeriodElevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=dht_LondonInterbankOfferedRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CreationDateAxis=dht_PeriodNineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CreationDateAxis=dht_PeriodTenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CreationDateAxis=dht_PeriodTwentyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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

- Details

Name:	ifrs-full_BorrowingsByNameAxis=dht_NordeaCreditFacilityRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
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Financial risk management, objectives and policies, Nordea Credit Facility (Details) $ in Thousands		1 Months Ended								12 Months Ended
	Nov. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Feb. 28, 2021 USD ($)	Jan. 31, 2021 USD ($)	Aug. 31, 2020 USD ($)	May 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2017 USD ($) Carrier	Apr. 30, 2017 USD ($) Building	Dec. 31, 2021 USD ($)	May 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Nov. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Aug. 31, 2018	Jun. 30, 2018 USD ($)
Credit Facility [Abstract]
Borrowing amount										$ 522,299		$ 449,959
Old Nordea Credit Facility [Member]
Credit Facility [Abstract]
Term										6 years
Borrowing amount								$ 204,000	$ 300,000							$ 96,000
Drawdown			$ 50,000	$ 15,000
Repayments of borrowings		$ 175,900
Number of VLCCs delivered \| Carrier								9
Debt repayment installment amount										$ 4,200
Debt prepayment before installment term	$ 25,800				$ 37,000	$ 25,800	$ 35,000
Old Nordea Credit Facility [Member] \| Second Quarter of 2023 [Member]
Credit Facility [Abstract]
Debt repayment final amount										$ 147,300
Old Nordea Credit Facility [Member] \| LIBOR [Member]
Credit Facility [Abstract]
Adjustment to interest rate basis																2.40%
Old Nordea Credit Facility [Member] \| Scrubbers [Member]
Credit Facility [Abstract]
Frequency of periodic repayment										quarterly
Secured commitment related to financing													$ 45,000	$ 50,000
Old Nordea Credit Facility [Member] \| Scrubbers [Member] \| LIBOR [Member]
Credit Facility [Abstract]
Adjustment to interest rate basis															2.40%
Old Nordea Credit Facility [Member] \| New Buildings [member]
Credit Facility [Abstract]
Number of newbuilding contracts \| Building									2
Nordea Credit Facility [Member]
Credit Facility [Abstract]
Borrowing amount										$ 225,214	$ 316,200	$ 109,423
Amount subject to quarterly reductions through term of facility											60,000
Drawdown		$ 233,800	$ 50,000	$ 15,000
Maturity date		January 2027
Uncommitted accordion		$ 250,000
Frequency of periodic repayment										quarterly
Credit facility covenant, required adjusted tangible net worth										$ 300,000
Nordea Credit Facility [Member] \| Bottom of Range [Member]
Credit Facility [Abstract]
Credit facility covenant, required percentage of charter-free market value of vessels to borrowings										135.00%
Credit facility covenant, required percentage of adjusted tangible net worth to total assets										25.00%
Credit facility covenant, required unencumbered consolidated cash										$ 30,000
Credit facility covenant, required percentage of unencumbered consolidated cash to gross interest bearing debt										6.00%
Nordea Credit Facility [Member] \| Fourth Quarter of 2022 [Member]
Credit Facility [Abstract]
Debt repayment installment amount										$ 1,300
Nordea Credit Facility [Member] \| First Quarter of 2023 [Member]
Credit Facility [Abstract]
Debt repayment installment amount										6,600
Nordea Credit Facility [Member] \| First Quarter of 2027 [Member]
Credit Facility [Abstract]
Debt repayment final amount										114,000
Debt repayment last installment										$ 5,900
Nordea Credit Facility [Member] \| LIBOR [Member]
Credit Facility [Abstract]
Adjustment to interest rate basis		1.90%								1.90%
Term Loan [Member]
Credit Facility [Abstract]
Borrowing amount											119,800
Revolving Credit Facility [Member]
Credit Facility [Abstract]
Borrowing amount											$ 196,400