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Interest bearing debt, Nordea reducing revolving credit facility (Details) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended
	Apr. 30, 2025	Sep. 30, 2025
Credit Facility [Abstract]
Borrowing amount		$ 268,526
Nordea Reducing Revolving Credit Facility [Member]
Credit Facility [Abstract]
Borrowing amount	$ 30,000
Frequency of periodic repayment		quarterly
Debt repayment installment amount	700
Debt repayment final payment	$ 13,700
Nordea Reducing Revolving Credit Facility [Member] | SOFR [Member]
Credit Facility [Abstract]
Interest rate spread	1.75%	1.75%

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Definition

The amount of prepayment of debt for final settlement.

+ References

No definition available.

+ Details

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

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard
-URIDate 2025-03-27

+ Details

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

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- References

No definition available.

+ Details

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X

- 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 2025-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_7&doctype=Standard
-URIDate 2025-03-27

+ Details

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Balance Type:	na
Period Type:	instant

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- Details

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Balance Type:
Period Type:

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- Details

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