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DETAIL OF SIGNIFICANT STATEMENT OF FINANCIAL POSITION AND STATEMENT OF COMPREHENSIVE INCOME CAPTIONS, Expenses by Nature (Details) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Expenses by Nature [abstract] |  |  |  |  |  |
Salaries, wages and other compensations | $ 46,723,990 |  | $ 41,407,697 |  | $ 36,168,618 |
Social security taxes | 7,736,209 |  | 7,851,574 |  | 7,335,967 |
Compensation to Directors and Statutory Committee | 407,036 |  | 392,053 |  | 386,737 |
Professional services fees | 7,423,325 |  | 5,120,449 |  | 3,101,696 |
Technical operator assistance fees | 6,078,353 |  | 9,551,489 |  | 13,235,940 |
Materials | 7,690,001 |  | 4,965,971 |  | 4,986,720 |
Third parties services | 4,770,767 |  | 4,868,722 |  | 4,404,920 |
Telecommunications and post expenses | 216,314 |  | 262,962 |  | 295,737 |
Rents | 1,315,717 |  | 339,374 |  | 190,344 |
Transports and freight | 2,248,073 |  | 1,911,595 |  | 1,547,379 |
Easements | 801,674 |  | 625,789 |  | 1,106,805 |
Offices supplies | 256,530 |  | 146,187 |  | 120,294 |
Travels expenses | 961,657 |  | 616,830 |  | 340,783 |
Insurance | 2,121,299 |  | 2,141,684 |  | 2,653,757 |
Property, plant and equipment maintenance | 20,273,800 |  | 20,129,944 |  | 24,336,339 |
Depreciation of property, plant and equipment | 60,627,686 |  | 60,950,789 |  | 58,299,088 |
Taxes and contributions | 31,061,332 |  | 33,812,652 |  | 32,491,050 |
Advertising | 884,640 |  | 588,844 |  | 322,456 |
Doubtful accounts | 170,614 |  | 0 |  | (403,942) |
Banks expenses | 166,616 |  | 309,371 |  | 72,683 |
Interests expense | 24,627,599 |  | 21,170,971 |  | 27,103,059 |
Foreign exchange loss | 479,075,435 |  | 162,261,989 |  | 75,483,148 |
Costs of services rendered to third parties |  |  | 152,347 |  | 348,627 |
Other expenses | 1,660,537 |  | 1,364,890 |  | 906,639 |
Total | 707,299,204 |  | 380,944,173 |  | 294,834,844 |
Tax on exports | 8,235,527 |  | 11,395,810 |  | 9,559,483 |
Operating Expenses, Regulated Activities [Member] |  |  |  |  |  |
Expenses by Nature [abstract] |  |  |  |  |  |
Salaries, wages and other compensations | 18,972,152 |  | 17,389,327 |  | 15,654,833 |
Social security taxes | 3,247,120 |  | 3,220,136 |  | 3,262,901 |
Compensation to Directors and Statutory Committee | 0 |  | 0 |  | 0 |
Professional services fees | 447,268 |  | 152,503 |  | 218,845 |
Technical operator assistance fees | 238,800 |  | 874,149 |  | 2,317,203 |
Materials | 2,098,683 |  | 1,440,796 |  | 1,654,886 |
Third parties services | 2,336,490 |  | 2,115,909 |  | 2,062,951 |
Telecommunications and post expenses | 46,110 |  | 50,224 |  | 58,373 |
Rents | 157,220 |  | 54,742 |  | 88,013 |
Transports and freight | 1,381,860 |  | 1,087,224 |  | 895,204 |
Easements | 801,674 |  | 488,057 |  | 1,040,126 |
Offices supplies | 125,826 |  | 57,760 |  | 42,414 |
Travels expenses | 489,282 |  | 318,688 |  | 189,781 |
Insurance | 1,246,406 |  | 1,242,401 |  | 1,541,932 |
Property, plant and equipment maintenance | 14,992,492 |  | 15,916,630 |  | 20,547,810 |
Depreciation of property, plant and equipment | 37,600,030 |  | 41,061,392 |  | 39,128,286 |
Taxes and contributions | 5,995,023 |  | 5,563,067 |  | 5,635,806 |
Advertising | 0 |  | 0 |  | 0 |
Doubtful accounts | 0 |  |  |  | 0 |
Banks expenses | 0 |  | 0 |  | 0 |
Interests expense | 0 |  | 0 |  | 0 |
Foreign exchange loss | 0 |  | 0 |  | 0 |
Costs of services rendered to third parties |  |  | 0 |  | 0 |
Other expenses | 590,917 |  | 387,228 |  | 324,082 |
Total | 90,767,353 |  | 91,420,233 |  | 94,663,446 |
Operating Expenses, Non Regulated Activities [Member] |  |  |  |  |  |
Expenses by Nature [abstract] |  |  |  |  |  |
Salaries, wages and other compensations | 15,729,859 |  | 14,104,839 |  | 12,094,067 |
Social security taxes | 2,802,891 |  | 2,773,490 |  | 2,556,436 |
Compensation to Directors and Statutory Committee | 0 |  | 0 |  | 0 |
Professional services fees | 797,379 |  | 1,870,411 |  | 323,833 |
Technical operator assistance fees | 5,839,553 |  | 8,677,340 |  | 10,918,737 |
Materials | 5,591,318 |  | 3,521,432 |  | 3,331,688 |
Third parties services | 2,247,126 |  | 2,144,758 |  | 2,097,461 |
Telecommunications and post expenses | 86,635 |  | 82,906 |  | 57,016 |
Rents | 1,120,550 |  | 251,533 |  | 51,142 |
Transports and freight | 833,729 |  | 785,859 |  | 627,110 |
Easements | 0 |  | 137,732 |  | 66,679 |
Offices supplies | 49,242 |  | 29,889 |  | 26,410 |
Travels expenses | 228,985 |  | 109,276 |  | 65,822 |
Insurance | 742,872 |  | 738,880 |  | 928,147 |
Property, plant and equipment maintenance | 4,842,909 |  | 3,968,261 |  | 3,534,262 |
Depreciation of property, plant and equipment | 19,907,412 |  | 16,153,353 |  | 15,187,279 |
Taxes and contributions | 171,272 |  | 189,601 |  | 232,958 |
Advertising | 236 |  | 0 |  | 0 |
Doubtful accounts | 0 |  |  |  | 0 |
Banks expenses | 0 |  | 0 |  | 0 |
Interests expense | 0 |  | 0 |  | 0 |
Foreign exchange loss | 0 |  | 0 |  | 0 |
Costs of services rendered to third parties |  |  | 152,347 |  | 348,627 |
Other expenses | 969,699 |  | 704,548 |  | 495,266 |
Total | 61,961,667 |  | 56,396,455 |  | 52,942,940 |
Administrative Expenses [Member] |  |  |  |  |  |
Expenses by Nature [abstract] |  |  |  |  |  |
Salaries, wages and other compensations | 9,613,195 |  | 7,594,762 |  | 6,452,777 |
Social security taxes | 1,223,534 |  | 1,375,553 |  | 1,063,990 |
Compensation to Directors and Statutory Committee | 407,036 |  | 392,053 |  | 386,737 |
Professional services fees | 4,531,240 |  | 2,797,783 |  | 2,433,349 |
Technical operator assistance fees | 0 |  | 0 |  | 0 |
Materials | 0 |  | 0 |  | 0 |
Third parties services | 187,151 |  | 608,055 |  | 244,508 |
Telecommunications and post expenses | 73,747 |  | 115,006 |  | 151,867 |
Rents | 35,914 |  | 30,060 |  | 48,436 |
Transports and freight | 32,474 |  | 37,347 |  | 24,016 |
Easements | 0 |  | 0 |  | 0 |
Offices supplies | 72,173 |  | 56,041 |  | 46,126 |
Travels expenses | 203,899 |  | 143,961 |  | 69,656 |
Insurance | 132,021 |  | 160,403 |  | 183,678 |
Property, plant and equipment maintenance | 438,399 |  | 245,053 |  | 254,267 |
Depreciation of property, plant and equipment | 3,120,244 |  | 3,736,044 |  | 3,983,523 |
Taxes and contributions | 201,507 |  | 92,205 |  | 100,915 |
Advertising | 0 |  | 0 |  | 0 |
Doubtful accounts | 0 |  |  |  | 0 |
Banks expenses | 166,616 |  | 309,371 |  | 72,683 |
Interests expense | 0 |  | 0 |  | 0 |
Foreign exchange loss | 0 |  | 0 |  | 0 |
Costs of services rendered to third parties |  |  | 0 |  | 0 |
Other expenses | 6,105 |  | 226,047 |  | 41,607 |
Total | 20,445,255 |  | 17,919,744 |  | 15,558,135 |
Selling Expenses [Member] |  |  |  |  |  |
Expenses by Nature [abstract] |  |  |  |  |  |
Salaries, wages and other compensations | 2,408,784 |  | 2,318,769 |  | 1,966,941 |
Social security taxes | 462,664 |  | 482,395 |  | 452,640 |
Compensation to Directors and Statutory Committee | 0 |  | 0 |  | 0 |
Professional services fees | 1,647,438 |  | 299,752 |  | 125,669 |
Technical operator assistance fees | 0 |  | 0 |  | 0 |
Materials | 0 |  | 3,743 |  | 146 |
Third parties services | 0 |  | 0 |  | 0 |
Telecommunications and post expenses | 9,822 |  | 14,826 |  | 28,481 |
Rents | 2,033 |  | 3,039 |  | 2,753 |
Transports and freight | 10 |  | 1,165 |  | 1,049 |
Easements | 0 |  | 0 |  | 0 |
Offices supplies | 9,289 |  | 2,497 |  | 5,344 |
Travels expenses | 39,491 |  | 44,905 |  | 15,524 |
Insurance | 0 |  | 0 |  | 0 |
Property, plant and equipment maintenance | 0 |  | 0 |  | 0 |
Depreciation of property, plant and equipment | 0 |  | 0 |  | 0 |
Taxes and contributions | 24,693,530 | [1] | 27,967,779 | [2] | 26,521,371 | [3]
Advertising | 884,404 |  | 588,844 |  | 322,456 |
Doubtful accounts | 170,614 |  |  |  | (403,942) |
Banks expenses | 0 |  | 0 |  | 0 |
Interests expense | 0 |  | 0 |  | 0 |
Foreign exchange loss | 0 |  | 0 |  | 0 |
Costs of services rendered to third parties |  |  | 0 |  | 0 |
Other expenses | 93,816 |  | 47,067 |  | 45,684 |
Total | 30,421,895 |  | 31,774,781 |  | 29,084,116 |
Financial Expenses [Member] |  |  |  |  |  |
Expenses by Nature [abstract] |  |  |  |  |  |
Salaries, wages and other compensations | 0 |  | 0 |  | 0 |
Social security taxes | 0 |  | 0 |  | 0 |
Compensation to Directors and Statutory Committee | 0 |  | 0 |  | 0 |
Professional services fees | 0 |  | 0 |  | 0 |
Technical operator assistance fees | 0 |  | 0 |  | 0 |
Materials | 0 |  | 0 |  | 0 |
Third parties services | 0 |  | 0 |  | 0 |
Telecommunications and post expenses | 0 |  | 0 |  | 0 |
Rents | 0 |  | 0 |  | 0 |
Transports and freight | 0 |  | 0 |  | 0 |
Easements | 0 |  | 0 |  | 0 |
Offices supplies | 0 |  | 0 |  | 0 |
Travels expenses | 0 |  | 0 |  | 0 |
Insurance | 0 |  | 0 |  | 0 |
Property, plant and equipment maintenance | 0 |  | 0 |  | 0 |
Depreciation of property, plant and equipment | 0 |  | 0 |  | 0 |
Taxes and contributions | 0 |  | 0 |  | 0 |
Advertising | 0 |  | 0 |  | 0 |
Doubtful accounts | 0 |  |  |  | 0 |
Banks expenses | 0 |  | 0 |  | 0 |
Interests expense | 24,627,599 |  | 21,170,971 |  | 27,103,059 |
Foreign exchange loss | 479,075,435 |  | 162,261,989 |  | 75,483,148 |
Costs of services rendered to third parties |  |  | 0 |  | 0 |
Other expenses | 0 |  | 0 |  | 0 |
Total | $ 503,703,034 |  | $ 183,432,960 |  | $ 102,586,207 |
[1] | Includes tax on exports for Ps. 8,235,527 for the year ended December 31, 2023.
[2] | Includes tax on exports of Ps. 11,395,810 for the year ended December 31, 2022.
[3] | Includes tax on exports for Ps. 9,559,483 for the year ended December 31, 2021.

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from costs of services rendered to third parties. + References No definition available. + Details
Name: | tgs_CostsOfServicesRenderedToThirdParties
Namespace Prefix: | tgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from easements. + References No definition available. + Details
Name: | tgs_EasementsExpense
Namespace Prefix: | tgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from office supplies. + References No definition available. + Details
Name: | tgs_OfficesSupplies
Namespace Prefix: | tgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of social security taxes expense. + References No definition available. + Details
Name: | tgs_SocialSecurityTaxes
Namespace Prefix: | tgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of tax expense on exports. + References No definition available. + Details
Name: | tgs_TaxOnExports
Namespace Prefix: | tgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expenses for technical operator assistance fees in related party transactions. + References No definition available. + Details
Name: | tgs_TechnicalOperatorAssistanceFeesRelatedPartyTransactions
Namespace Prefix: | tgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

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

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

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