XML 95 R79.htm IDEA: XBRL DOCUMENT
v3.19.1

Events after the reporting date (Details Text) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 26, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Dividend Payment [Abstract] |  |  |  |
Payment | $ 7,100,000 |  |  |
Per share Common | $ 0.05 | $ 0.08 | $ 0.20 | $ 0.71

X
- Definition The amount of dividends recognised as distributions to owners. + References No definition available. + Details
Name: | dht_DividendPayment
Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Disclosure of dividend payments. + References No definition available. + Details
Name: | dht_DividendPaymentAbstract
Namespace Prefix: | dht_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of dividends paid per ordinary share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 34 -IssueDate 2017-01-01 -Paragraph 16A -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=34&date=2017-03-01&anchor=para_16A_f&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DividendsPaidOrdinarySharesPerShare
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration