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DETAIL OF SIGNIFICANT STATEMENT OF FINANCIAL POSITION AND STATEMENT OF COMPREHENSIVE INCOME CAPTIONS, Contract Liabilities (Details) - ARS ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Current liabilities [abstract] |  |  |
Contract liabilities | $ 7,462,653 | $ 9,835,782 |
Non Current liabilities [abstract] |  |  |
Contract liabilities | 111,716,068 | 119,360,467 |
Revenue recognized from contracts with customers | 8,153,926 | 8,899,978 | $ 3,187,073
Natural Gas Transportation [Member] |  |  |
Current liabilities [abstract] |  |  |
Contract liabilities | 2,447,291 | 2,447,291 |
Non Current liabilities [abstract] |  |  |
Contract liabilities | 35,128,670 | 37,576,135 |
Liquids Production and Commercialization [Member] |  |  |
Current liabilities [abstract] |  |  |
Contract liabilities | 715,353 | 3,066,702 |
Non Current liabilities [abstract] |  |  |
Contract liabilities | 0 | 715,354 |
Midstream [Member] |  |  |
Current liabilities [abstract] |  |  |
Contract liabilities | 4,289,078 | 4,297,985 |
Non Current liabilities [abstract] |  |  |
Contract liabilities | 76,587,398 | 81,068,978 |
UT [Member] |  |  |
Current liabilities [abstract] |  |  |
Contract liabilities | 10,931 | 23,804 |
Non Current liabilities [abstract] |  |  |
Contract liabilities | $ 0 | $ 0 |

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- Definition The amount of current contract liabilities. [Refer: Contract liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 105 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_105&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | ifrs-full_CurrentLiabilitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of non-current contract liabilities. [Refer: Contract liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 105 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_105&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | ifrs-full_NoncurrentLiabilitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of revenue that was included in the contract liability balance at the beginning of the period. [Refer: Contract liabilities; Revenue from contracts with customers] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 116 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_116_b&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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

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

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