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Vessels and subsidiaries, Vessels (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2020
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Vessel
Reconciliation of changes in property, plant and equipment [abstract]              
Vessels         $ 1,261,998,000 $ 1,467,846,000  
Impairment [Abstract]              
Non-cash impairment charge $ 7,600,000 $ 4,900,000         $ 12,600,000
Number of vessels recorded non-cash impairment charge | Vessel             3
Percentage of estimated weighted average cost of capital 8.59% 8.12%          
Percentage of decreasing the weighted average cost of capital 0.50%            
Impact of a 0.5% adverse change of weighted average cost of capital on impairment charge $ 1,500,000            
Increasing/(decreasing) in future charter rates per day 500            
Impact of $500 per day adverse change of future charter rates on impairment charge 1,400,000            
Impact of $500 per day favorable change of future charter rates on impairment charge (1,400,000)            
Forecast [Member]              
Depreciation and amortisation expense [abstract]              
Depreciation expense     $ 1,144 $ 2,649      
Cost [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       2,005,945,000 2,165,604,000 2,130,204,000  
Additions         86,000 68,156,000  
Transferred from vessels upgrades         8,690,000 122,907,000  
Disposals         (168,435,000) (155,664,000)  
Balance, end of period 2,130,204,000       2,005,945,000 2,165,604,000 $ 2,130,204,000
Accumulated Depreciation and Impairment [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       (743,947,000) (697,758,000) (653,769,000)  
Charge for the period         (121,738,000) (127,743,000)  
Disposals         75,549,000 83,754,000  
Balance, end of period (653,769,000)       (743,947,000) (697,758,000) (653,769,000)
Vessel Upgrades [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       4,583,000 372,000 17,269,000  
Additions         12,900,000 106,010,000  
Transferred to vessels         (8,690,000) (122,907,000)  
Balance, end of period 17,269,000       4,583,000 372,000 17,269,000
Time Charter Contracts [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Vessels         0 0  
Time Charter Contracts [Member] | Cost [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       0 0 6,600,000  
Additions         0 0  
Transferred from vessels upgrades         0 0  
Disposals         0 (6,600,000)  
Balance, end of period 6,600,000       0 0 6,600,000
Time Charter Contracts [Member] | Accumulated Depreciation and Impairment [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       0 0 (6,148,000)  
Charge for the period         0 (452,000)  
Disposals         0 6,600,000  
Balance, end of period (6,148,000)       0 0 (6,148,000)
Time Charter Contracts [Member] | Vessel Upgrades [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       0 0 0  
Additions         0 0  
Transferred to vessels         0 0  
Balance, end of period 0       $ 0 0 0
VLCC [Member]              
Impairment [Abstract]              
Impairment rate for time charter equivalents, remaining period in current year   $ 20,107          
Impairment rate for time charter equivalents, first year   21,550         19,610
Impairment rate for time charter equivalents, second year   21,194         25,279
Impairment rate for time charter equivalents, thereafter   $ 42,557         $ 42,466
Percentage of reduction in impairment rate   20.00%         20.00%
Consideration period for reduction in impairment rate         15 years    
VLCC [Member] | VLCCs built 2015 and Later [Member]              
Impairment [Abstract]              
Lower fuel consumption for modern vessels   $ 4,000         $ 4,000
Vessels [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Vessels         $ 1,232,380,000 1,405,420,000  
Depreciation and amortisation expense [abstract]              
Estimated useful life of assets         20 years    
Vessels [Member] | Cost [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       1,907,456,000 $ 2,051,924,000 2,020,690,000  
Additions         96,000 66,531,000  
Transferred from vessels upgrades         1,467,000 75,417,000  
Disposals         (146,031,000) (110,713,000)  
Balance, end of period 2,020,690,000       1,907,456,000 2,051,924,000 2,020,690,000
Vessels [Member] | Accumulated Depreciation and Impairment [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       (675,077,000) (646,504,000) (596,709,000)  
Charge for the period         (89,615,000) (94,700,000)  
Disposals         61,042,000 44,905,000  
Balance, end of period (596,709,000)       (675,077,000) (646,504,000) (596,709,000)
Vessels [Member] | Vessel Upgrades [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       0 232,000 2,788,000  
Additions         1,235,000 72,861,000  
Transferred to vessels         (1,467,000) (75,417,000)  
Balance, end of period 2,788,000       0 232,000 2,788,000
Drydock [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Vessels         25,826,000 36,602,000  
Drydock [Member] | Cost [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       46,617,000 54,368,000 51,843,000  
Additions         (12,000) 139,000  
Transferred from vessels upgrades         7,223,000 30,158,000  
Disposals         (14,961,000) (27,772,000)  
Balance, end of period 51,843,000       46,617,000 54,368,000 51,843,000
Drydock [Member] | Accumulated Depreciation and Impairment [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       (20,792,000) (17,766,000) (30,880,000)  
Charge for the period         (11,412,000) (13,270,000)  
Disposals         8,387,000 26,383,000  
Balance, end of period (30,880,000)       (20,792,000) (17,766,000) (30,880,000)
Drydock [Member] | Vessel Upgrades [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       2,807,000 140,000 3,265,000  
Additions         9,890,000 27,033,000  
Transferred to vessels         (7,223,000) (30,158,000)  
Balance, end of period 3,265,000       2,807,000 140,000 3,265,000
Scrubbers [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Vessels         3,793,000 25,824,000  
Impairment [Abstract]              
Lower fuel consumption for modern vessels   $ 3,000         4,000
Scrubbers [Member] | Cost [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       51,871,000 59,311,000 51,071,000  
Additions         3,000 1,486,000  
Transferred from vessels upgrades         0 17,333,000  
Disposals         (7,443,000) (10,579,000)  
Balance, end of period 51,071,000       51,871,000 59,311,000 51,071,000
Scrubbers [Member] | Accumulated Depreciation and Impairment [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       (48,079,000) (33,488,000) (20,032,000)  
Charge for the period         (20,710,000) (19,322,000)  
Disposals         6,119,000 5,866,000  
Balance, end of period (20,032,000)       (48,079,000) (33,488,000) (20,032,000)
Scrubbers [Member] | Vessel Upgrades [Member]              
Reconciliation of changes in property, plant and equipment [abstract]              
Balance, beginning of period       $ 1,776,000 0 11,216,000  
Additions         1,776,000 6,117,000  
Transferred to vessels         0 (17,333,000)  
Balance, end of period 11,216,000       $ 1,776,000 $ 0 11,216,000
Exhaust Gas Cleaning Systems [Member]              
Depreciation and amortisation expense [abstract]              
Estimated useful life of assets         3 years    
DHT China [Member]              
Impairment [Abstract]              
Non-cash impairment charge             2,800,000
Recoverable amount 38,400,000           38,400,000
DHT Europe [Member]              
Impairment [Abstract]              
Non-cash impairment charge             6,300,000
Recoverable amount 38,000,000           38,000,000
DHT Scandinavia [Member]              
Impairment [Abstract]              
Non-cash impairment charge             3,500,000
Recoverable amount $ 40,400,000           $ 40,400,000