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Condensed Financial Information of DHT Holdings, Inc. (parent company only) (Details) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Condensed Financial Information of DHT Holdings, Inc. (parent company only) [Abstract] |  |  |
Percentage of restricted net assets of consolidated subsidiaries exceeds of consolidated net assets | 25.00% | 25.00% | 25.00%

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- References No definition available. + Details
Name: | dht_CondensedFinancialInformationOfDHTHoldingsIncParentCompanyOnlyAbstract
Namespace Prefix: | dht_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of restricted net assets of consolidated subsidiaries exceeds of consolidated net assets. + References No definition available. + Details
Name: | dht_PercentageOfRestrictedNetAssets
Namespace Prefix: | dht_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration