Interest bearing debt, Credit agricole credit facility (Details) - Credit Agricole Credit Facility [Member] $ in Millions	9 Months Ended
Sep. 30, 2024 USD ($)
Credit Facility [Abstract]
Frequency of periodic repayment	quarterly
Debt repayment installment amount	$ 0.6
Debt repayment final payment	$ 22.5

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

No definition available.

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