The amount of prepayment of debt for final settlement as per amended credit agreement.

No definition available.

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

- Definition

Amount of the required periodic payments including both interest and principal payments as per amended credit agreement.

+ References

No definition available.

+ Details

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

- Definition

Refers to percentage of Credit Facility contains a covenant requiring that at all times the charter-free market value of the vessels that secure the Credit Agricole Credit Facility of borrowings.

+ References

No definition available.

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

Name:	dht_CreditFacilityCovenantAdjustedTangibleNetWorth
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_CreditFacilityCovenantAdjustedTangibleNetWorthToTotalAssets
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_CreditFacilityCovenantUnencumberedConsolidatedCash
Namespace Prefix:	dht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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_CreditFacilityCovenantUnencumberedConsolidatedCashToGrossInterestBearingDebt
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

Amount of payments in connection with sale.

+ References

No definition available.

+ Details

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

- 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

The amount of non cash expense related to upfront financing fees recognized by the entity.

+ References

No definition available.

+ Details

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

- Definition

Number of VLCC refinanced during the period.

+ References

No definition available.

+ Details

Name:	dht_NumberOfVLCCs
Namespace Prefix:	dht_
Data Type:	xbrli:integerItemType
Balance Type:	na
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 2019-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard
-URIDate 2019-03-27

+ 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 2019-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_7&doctype=Standard
-URIDate 2019-03-27

+ 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_NordeaSamcoCreditFacilityMember
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_ClassesOfPropertyPlantAndEquipmentAxis=dht_DHTEagleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	ifrs-full_CreationDateAxis=dht_PeriodSixMember
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:

Financial risk management, objectives and policies, The Nordea Samco Credit Facility (Details) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 30, 2018 USD ($) Carrier	Jun. 30, 2018 USD ($)	Dec. 31, 2019 USD ($) Intallment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2014 USD ($)
Credit Facility [Abstract]
Borrowing amount			$ 850,972	$ 967,275
Frequency of periodic repayment			Quarterly
Nordea Samco Credit Facility [Member]
Credit Facility [Abstract]
Borrowing amount	$ 484,000					$ 302,000
Credit facility covenant to maintain adjusted tangible net worth			$ 200,000
Amended debt repayment quarterly installment amount			$ 5,800
Number of VLCCs refinanced \| Carrier	13
Noncash finance expense related to upfront fees		$ 4,300
Nordea Samco Credit Facility [Member] \| Bottom of Range [Member]
Credit Facility [Abstract]
Covenants requiring all times charter-free market value of vessels			135.00%
Percentage of covenant to maintain adjusted tangible net worth to total assets for credit facility			25.00%
Credit facility covenant to maintain encumbered cash			$ 20,000
Percentage of covenant required unencumbered consolidated cash to gross interest-bearing debt for credit facility			6.00%
Nordea Samco Credit Facility [Member] \| DHT Eagle [Member]
Credit Facility [Abstract]
Frequency of periodic repayment			Quarterly
Debt repayment installment amount			$ 5,000
Debt repayment amount in connection with sale					$ 16,400
Nordea Samco Credit Facility [Member] \| March 2015 to December 2019 [Member]
Credit Facility [Abstract]
Number of installments for repaying debt \| Intallment			20
Frequency of periodic repayment			Quarterly
Debt repayment installment amount			$ 5,100
Nordea Samco Credit Facility [Member] \| December 2019 [Member]
Credit Facility [Abstract]
Debt repayment final amount			199,800
Amended debt repayment final amount			190,400
Nordea Samco Credit Facility [Member] \| December 2019 [Member] \| DHT Eagle [Member]
Credit Facility [Abstract]
Debt repayment final amount			$ 180,100
Nordea Samco Credit Facility [Member] \| LIBOR [Member]
Credit Facility [Abstract]
Adjustment to interest rate basis						2.50%