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Stockholders' equity and dividend payment, Stock repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Stock Repurchases [Abstract]
Share repurchases (in shares)	5,513,254	0	725,298
Aggregate consideration	$ 32,178		$ 3,248
Average price (in dollars per share)	$ 5.82		$ 4.47

X

- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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

X

- Definition

Average price per share of shares repurchased in open market.

+ References

No definition available.

+ Details

Name:	dht_TreasuryStockPricePerShare
Namespace Prefix:	dht_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The decrease in equity resulting from the purchase of treasury shares. [Refer: Treasury shares]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 106
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_106_d&doctype=Standard
-URIDate 2021-03-24

+ Details

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