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

No definition available.

Name:	dht_CreditFacilityCovenantRequiredAdjustedTangibleNetWorth
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

Name:	dht_CreditFacilityCovenantRequiredPercentageOfAdjustedTangibleNetWorthToTotalAssets
Namespace Prefix:	dht_
Data Type:	num: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

Name:	dht_CreditFacilityCovenantRequiredPercentageOfUnencumberedConsolidatedCashToGrossInterestBearingDebt
Namespace Prefix:	dht_
Data Type:	num: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

Name:	dht_CreditFacilityCovenantRequiredUnencumberedConsolidatedCash
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

Name:	dht_CreditFacilityCovenantsPercentageOfCharterFreeMarketValueOfVesselsToBorrowings
Namespace Prefix:	dht_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of installments for principal repayments of borrowings.

+ References

No definition available.

+ Details

Name:	dht_CreditFacilityPrincipalRepaymentsNumberOfInstallments
Namespace Prefix:	dht_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- 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

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 amount of contractual commitments for financing credit agreement.

+ References

No definition available.

+ Details

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

- 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 VLCCs whose acquisition is to be funded through credit facility between and among ABN AMRO, DVB and Nordea as lenders, three vessel-owning companies as borrowers, and DHT Holdings, Inc. as guarantor.

+ References

No definition available.

+ Details

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

- 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 2020-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard
-URIDate 2020-01-01

+ 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 2020-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_7&doctype=Standard
-URIDate 2020-01-01

+ Details

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

- Details

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

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
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_TypesOfInterestRatesAxis=dht_LondonInterbankOfferedRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=dht_TrancheBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

Financial risk management, objectives and policies, Credit Agricole Credit Facility (Details) $ in Thousands		1 Months Ended	9 Months Ended	12 Months Ended
	Jun. 22, 2015 USD ($) VLCC	Jun. 30, 2016 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) Intallment	Dec. 31, 2019 USD ($)	Jan. 16, 2017 USD ($)
Credit Facility [Abstract]
Borrowing amount				$ 449,959	$ 850,972
Credit Agricole Credit Facility [Member]
Credit Facility [Abstract]
Number of VLCCs whose acquisition is to be funded through credit facility \| VLCC	1
Borrowing amount				37,626	$ 55,719
Credit facility covenant, required adjusted tangible net worth				$ 200,000
Credit Agricole Credit Facility [Member] \| Top of Range [Member]
Credit Facility [Abstract]
Financing commitment	$ 50,000
Credit Agricole 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				$ 20,000
Credit facility covenant, required percentage of unencumbered consolidated cash to gross interest bearing debt				6.00%
Credit Agricole Credit Facility [Member] \| LIBOR [Member]
Credit Facility [Abstract]
Adjustment to interest rate basis				2.19%
Credit Agricole Credit Facility [Member] \| December 2023 [Member]
Credit Facility [Abstract]
Debt repayment final amount				$ 29,700
Credit Agricole Credit Facility [Member] \| Tranche B [Member]
Credit Facility [Abstract]
Borrowing amount						$ 48,700
Number of installments for repaying debt \| Intallment				28
Debt repayment installment amount				$ 700
Frequency of periodic repayment				Quarterly
Credit Agricole Credit Facility [Member] \| Tranche B [Member] \| LIBOR [Member]
Credit Facility [Abstract]
Adjustment to interest rate basis						2.1875%
Credit Agricole Credit Facility [Member] \| Tranche B [Member] \| June 2016 [Member]
Credit Facility [Abstract]
Debt prepayment before installment term		$ 5,000
Credit Agricole Credit Facility [Member] \| Tranche B [Member] \| March 2017 to December 2023 [Member]
Credit Facility [Abstract]
Debt prepayment before installment term			$ 12,700