XML 81 R56.htm IDEA: XBRL DOCUMENT
v3.21.1

CRITICAL ACCOUNTING ESTIMATES AND JUDGMENTS (Details) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
CRITICAL ACCOUNTING ESTIMATES AND JUDGMENTS [Abstract] |  |  |
Percentage points in probability of occurrence in base scenario | 70.00% |  |
Percentage points in probability of occurrence in optimistic scenario | 10.00% |  |
Percentage points in probability of occurrence in pessimistic scenario | 20.00% |  |
Percentage points of discount rate used in weighted probability of occurrence in all scenarios | 12.40% |  |
Impairment of property, plant and equipment | $ 3,114,056 | $ 0 | $ 0
Increase percentage points in weighted probability of pessimistic case | 80.00% |  |
Minimum percentage points in weighted probability of pessimistic case | 20.00% |  |
Maximum percentage points in weighted probability of pessimistic case | 100.00% |  |
Increase in impairment loss due to reduction in probability of occurrence in optimistic and base scenarios | $ 5,393,575 |  |
Percentage of increase in discount rate | 1.00% |  |
Increase in impairment loss due to increase in discount rate | $ 906,660 |  |
Book value of PPE [Abstract] |  |  |
Amounts before impairment charge | 95,188,000 |  |
Impairment charge | (3,114,056) | $ 0 | $ 0
Amounts after impairment charge | 92,074,000 |  |
Natural Gas Transportation [Member] |  |  |
CRITICAL ACCOUNTING ESTIMATES AND JUDGMENTS [Abstract] |  |  |
Impairment of property, plant and equipment | 3,114,000 |  |
Book value of PPE [Abstract] |  |  |
Amounts before impairment charge | 70,036,000 |  |
Impairment charge | (3,114,000) |  |
Amounts after impairment charge | 66,922,000 |  |
Other Services [Member] |  |  |
CRITICAL ACCOUNTING ESTIMATES AND JUDGMENTS [Abstract] |  |  |
Impairment of property, plant and equipment | 0 |  |
Book value of PPE [Abstract] |  |  |
Amounts before impairment charge | 25,152,000 |  |
Impairment charge | 0 |  |
Amounts after impairment charge | $ 25,152,000 |  |

X
- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_v&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_a&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The accounting estimate for the maximum percentage points in the weighted probability of the pessimistic case would not generate a value that would require an adjustment in carrying amount for impairment. + References No definition available. + Details
Name: | tgs_AccountingEstimateMaximumPercentagePointsInWeightedProbabilityOfPessimisticCase
Namespace Prefix: | tgs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The accounting estimate for the minimum percentage points in the weighted probability of the pessimistic case would not generate a value that would require an adjustment in carrying amount for impairment. + References No definition available. + Details
Name: | tgs_AccountingEstimateMinimumPercentagePointsInWeightedProbabilityOfPessimisticCase
Namespace Prefix: | tgs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The accounting estimate for the percentage points of discount rate in the probability of occurrence in all the three scenarios that would not generate a value but, require an adjustment in carrying amount for impairment. + References No definition available. + Details
Name: | tgs_AccountingEstimatePercentageOfDiscountRateUsedInWeightedProbabilityOfOccurrenceInAllScenarios
Namespace Prefix: | tgs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The accounting estimate for the percentage points in the probability of occurrence in base scenario that would not generate a value but, require an adjustment in carrying amount for impairment. + References No definition available. + Details
Name: | tgs_AccountingEstimateProbabilityOfOccurrenceInBaseScenario
Namespace Prefix: | tgs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The accounting estimate for the percentage points in the probability of occurrence in optimistic scenario that would not generate a value but, require an adjustment in carrying amount for impairment. + References No definition available. + Details
Name: | tgs_AccountingEstimateProbabilityOfOccurrenceInOptimisticScenario
Namespace Prefix: | tgs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The accounting estimate for the percentage points in the probability of occurrence in pessimistic scenario that would not generate a value but, require an adjustment in carrying amount for impairment. + References No definition available. + Details
Name: | tgs_AccountingEstimateProbabilityOfOccurrenceInPessimisticScenario
Namespace Prefix: | tgs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

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

X
- Definition The amount after impairment loss recognized in profit or loss for property, plant and equipment. [Refer: Impairment loss recognized in profit or loss; Property, plant and equipment] + References No definition available. + Details
Name: | tgs_ImpairmentLossRecognizedAfterProfitOrLossPropertyPlantAndEquipment
Namespace Prefix: | tgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount before impairment loss recognized in profit or loss for property, plant and equipment. [Refer: Impairment loss recognized in profit or loss; Property, plant and equipment] + References No definition available. + Details
Name: | tgs_ImpairmentLossRecognizedBeforeProfitOrLossPropertyPlantAndEquipment
Namespace Prefix: | tgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase in the accounting estimate for the percentage points in the weighted probability of the pessimistic case would not generate a value that would require an adjustment in carrying amount for impairment. + References No definition available. + Details
Name: | tgs_IncreaseInAccountingEstimateWeightedProbabilityOfPessimisticCase
Namespace Prefix: | tgs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase in impairment loss due to increase in discount rate. + References No definition available. + Details
Name: | tgs_IncreaseInImpairmentLossDueToIncreaseInDiscountRate
Namespace Prefix: | tgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase in impairment loss due to reduction in probability of occurrence in optimistic and base scenarios. + References No definition available. + Details
Name: | tgs_IncreaseInImpairmentLossDueToReductionInProbabilityOfOccurrenceInOptimisticAndBaseScenarios
Namespace Prefix: | tgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of increase in discount rate in sensitivity analysis. + References No definition available. + Details
Name: | tgs_PercentageOfIncreaseInDiscountRate
Namespace Prefix: | tgs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_SegmentsAxis=tgs_NaturalGasTransportationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=tgs_OtherServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |