IMPAIRMENT TESTING (Details textuals 2) - USD ($)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [abstract]
Adjustment of operating expenses for inflation, percentage	3.00%	2.00%
Adjustment of administrative expenses for inflation, percentage	2.00%	2.00%
Expected to generate normal income from delivery from shipyard	25 years
Average remaining life of tanker	14 years
Decrease/increase in tanker per day freight rates	$ 1,000
Decrease/increase in value in use of freight rates	$ 241,000,000
Increase/decrease in WACC percentage	1.00%
Decrease/increase in value in use of WACC	USD 100-112m
Increase/decrease in operating expenses percentage	10.00%
Decrease/increase in value in use of operating expenses	$ 187,000,000
Reversal of impairment	159,000,000
Market value based on broker values of vessels	1,672,000,000
Difference of Market value and Carrying amount	$ 20,000,000

The amount by which a cash-generating unit's (group of units') recoverable amount exceeds its carrying amount. [Refer: Carrying amount [member]; Cash-generating units [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2017-01-01
-Paragraph 134
-Subparagraph f
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2017-03-01&anchor=para_134_f_i&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2017-01-01
-Paragraph 135
-Subparagraph e
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2017-03-01&anchor=para_135_e_i&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_AmountByWhichUnitsRecoverableAmountExceedsItsCarryingAmount
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The higher of an asset’s (or cash-generating unit’s) fair value less costs of disposal and its value in use. [Refer: Cash-generating units [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2017-01-01
-Paragraph 130
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2017-03-01&anchor=para_130_e&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents term of average remaining life of tanker.

+ References

No definition available.

+ Details

Name:	trmd_AverageRemainingLifeOfTanker
Namespace Prefix:	trmd_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents period expected to generate normal income from delivery from shipyard.

+ References

No definition available.

+ Details

Name:	trmd_ExpectedToGenerateNormalIncomeFromDeliveryFromShipyardPeriod
Namespace Prefix:	trmd_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents percentage of adjustment of administrative expenses for inflation.

+ References

No definition available.

+ Details

Name:	trmd_PercentageOfAdjustmentOfAdministrativeExpensesForInflation
Namespace Prefix:	trmd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents percentage of adjustment of operating expenses for inflation.

+ References

No definition available.

+ Details

Name:	trmd_PercentageOfAdjustmentOfOperatingExpensesForInflation
Namespace Prefix:	trmd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The reversal of impairment loss that would have been recorded if upside of sensitivity analysis is applied.

+ References

No definition available.

+ Details

Name:	trmd_ReversalOfImpairmentLossIfUpsideOfSensitivityAnalysisApplied
Namespace Prefix:	trmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents a specified rate variance in a specified key assumption operating expense in the determination of value in use.

+ References

No definition available.

+ Details

Name:	trmd_SensitivityAnalysisOfValueInUseChangeInKeyAssumptionOperatingExpenses
Namespace Prefix:	trmd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents a specified rate variance in a specified key assumption freight rate in the determination of value in use.

+ References

No definition available.

+ Details

Name:	trmd_SensitivityAnalysisOfValueInUseChangeInKeyAssumptionPerDayFreightRates
Namespace Prefix:	trmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents a specified rate variance in a specified key assumption weighted average cost of capital in the determination of value in use.

+ References

No definition available.

+ Details

Name:	trmd_SensitivityAnalysisOfValueInUseChangeInKeyAssumptionWeightedAverageCostOfCapital
Namespace Prefix:	trmd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the impact on value in use due to a specified change in the operating expense.

+ References

No definition available.

+ Details

Name:	trmd_SensitivityAnalysisOfValueInUseImpactOfChangeInKeyAssumptionOperatingExpenses
Namespace Prefix:	trmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the impact on value in use due to a specified change in the freight rates.

+ References

No definition available.

+ Details

Name:	trmd_SensitivityAnalysisOfValueInUseImpactOfChangeInKeyAssumptionPerDayFreightRates
Namespace Prefix:	trmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the impact on value in use due to a specified change in the weighted average cost of capital.

+ References

No definition available.

+ Details

Name:	trmd_SensitivityAnalysisOfValueInUseImpactOfChangeInKeyAssumptionWeightedAverageCostOfCapital
Namespace Prefix:	trmd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration