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Vessels and subsidiaries, Vessels and time charter contracts (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) Vessel
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Net book value | $ 1,476,436,000 |  | $ 1,467,846,000 | $ 1,476,436,000
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) |  |  |
Cost [Member] |  |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Balance, beginning of period |  |  | 2,130,204,000 | $ 2,115,745,000
Additions |  |  | 68,156,000 |
Transferred from vessels upgrades |  |  | 122,907,000 | 22,964,000
Disposals |  |  | (155,664,000) | (8,505,000)
Balance, end of period | 2,130,204,000 |  | 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 |  |  | (653,769,000) | (526,301,000)
Charge for the period |  |  | (127,743,000) | (123,412,000)
Impairment charges |  |  |  | (12,560,000)
Disposals |  |  | 83,754,000 | 8,505,000
Balance, end of period | (653,769,000) |  | (697,758,000) | (653,769,000)
Vessel Upgrades [Member] |  |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Balance, beginning of period |  |  | 17,269,000 | 11,652,000
Additions |  |  | 106,010,000 | 28,581,000
Transferred to vessels |  |  | (122,907,000) | (22,964,000)
Balance, end of period | 17,269,000 |  | 372,000 | 17,269,000
Time Charter Contracts [Member] |  |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Net book value | 452,000 |  | 0 | 452,000
Time Charter Contracts [Member] | Cost [Member] |  |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Balance, beginning of period |  |  | 6,600,000 | 6,600,000
Additions |  |  | 0 |
Transferred from vessels upgrades |  |  | 0 | 0
Disposals |  |  | (6,600,000) | 0
Balance, end of period | 6,600,000 |  | 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 |  |  | (6,148,000) | (5,170,000)
Charge for the period |  |  | (452,000) | (978,000)
Impairment charges |  |  |  | 0
Disposals |  |  | 6,600,000 | 0
Balance, end of period | (6,148,000) |  | 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
Additions |  |  | 0 | 0
Transferred to vessels |  |  | 0 | 0
Balance, end of period | 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] |  |  |  |
Net book value | 1,423,981,000 |  | $ 1,405,420,000 | 1,423,981,000
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 |  |  | $ 2,020,690,000 | 2,015,795,000
Additions |  |  | 66,531,000 |
Transferred from vessels upgrades |  |  | 75,417,000 | 4,896,000
Disposals |  |  | (110,713,000) | 0
Balance, end of period | 2,020,690,000 |  | 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 |  |  | (596,709,000) | (487,996,000)
Charge for the period |  |  | (94,700,000) | (96,153,000)
Impairment charges |  |  |  | (12,560,000)
Disposals |  |  | 44,905,000 | 0
Balance, end of period | (596,709,000) |  | (646,504,000) | (596,709,000)
Vessels [Member] | Vessel Upgrades [Member] |  |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Balance, beginning of period |  |  | 2,788,000 | 1,371,000
Additions |  |  | 72,861,000 | 6,313,000
Transferred to vessels |  |  | (75,417,000) | (4,896,000)
Balance, end of period | 2,788,000 |  | 232,000 | 2,788,000
Drydock [Member] |  |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Net book value | 20,963,000 |  | 36,602,000 | 20,963,000
Drydock [Member] | Cost [Member] |  |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Balance, beginning of period |  |  | 51,843,000 | 50,868,000
Additions |  |  | 139,000 |
Transferred from vessels upgrades |  |  | 30,158,000 | 9,480,000
Disposals |  |  | (27,772,000) | (8,505,000)
Balance, end of period | 51,843,000 |  | 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 |  |  | (30,880,000) | (26,629,000)
Charge for the period |  |  | (13,270,000) | (12,756,000)
Impairment charges |  |  |  | 0
Disposals |  |  | 26,383,000 | 8,505,000
Balance, end of period | (30,880,000) |  | (17,766,000) | (30,880,000)
Drydock [Member] | Vessel Upgrades [Member] |  |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Balance, beginning of period |  |  | 3,265,000 | 0
Additions |  |  | 27,033,000 | 12,745,000
Transferred to vessels |  |  | (30,158,000) | (9,480,000)
Balance, end of period | 3,265,000 |  | 140,000 | 3,265,000
Scrubbers [Member] |  |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Net book value | 31,039,000 |  | 25,824,000 | 31,039,000
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 |  |  | 51,071,000 | 42,482,000
Additions |  |  | 1,486,000 |
Transferred from vessels upgrades |  |  | 17,333,000 | 8,589,000
Disposals |  |  | (10,579,000) | 0
Balance, end of period | 51,071,000 |  | 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 |  |  | (20,032,000) | (6,507,000)
Charge for the period |  |  | (19,322,000) | (13,525,000)
Impairment charges |  |  |  | 0
Disposals |  |  | 5,866,000 | 0
Balance, end of period | (20,032,000) |  | (33,488,000) | (20,032,000)
Scrubbers [Member] | Vessel Upgrades [Member] |  |  |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |  |  |
Balance, beginning of period |  |  | 11,216,000 | 10,281,000
Additions |  |  | 6,117,000 | 9,524,000
Transferred to vessels |  |  | (17,333,000) | (8,589,000)
Balance, end of period | 11,216,000 |  | $ 0 | 11,216,000
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 | 38,000,000.0 |  |  | 38,000,000.0
DHT Scandinavia [Member] |  |  |  |
Impairment [Abstract] |  |  |  |
Non-cash impairment charge |  |  |  | 3,500,000
Recoverable amount | $ 40,400,000 |  |  | $ 40,400,000

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- Definition The time charter equivalent Freight Forwards Agreement rates used for the impairment test per day for the remaining period of the current year. + References No definition available. + Details
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