Name:	dht_InterestBearingDebtAbstract
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Data Type:	xbrli:stringItemType
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The amount of unamortized upfront fees.

No definition available.

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

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

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

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

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
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Data Type:	num:percentItemType
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The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2020-01-01
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-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_50_a&doctype=Standard
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearMember
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Data Type:	na
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Name:	ifrs-full_BorrowingsByNameAxis=dht_AbnAmroCreditFacilityTwoMember
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_BorrowingsByNameAxis=dht_CreditAgricoleCreditFacilityMember
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Data Type:	na
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Data Type:	na
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