XML 118 R97.htm IDEA: XBRL DOCUMENT
v3.19.1

FINANCIAL RISK MANAGEMENT, Liquidity Risk (Details) - ARS ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | $ 20,597,052 | [1] | $ 6,642,620 | [1] | $ 7,217,464
Liquidity Risk [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 27,120,439 |  | 6,036,902 |  |
Other financial liabilities | 3,479,326 |  | 2,537,203 |  |
Finance leases | 2,199,572 |  | 1,812,480 |  |
Liquidity Risk [Member] | Without Specified Maturity [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  |
Other financial liabilities | 0 |  | 0 |  |
Finance leases | 0 |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  |
Other financial liabilities | 104,841 |  | 111,364 |  |
Finance leases | 56,891 |  | 41,545 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | Until 12-31-2017 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 103,597 |  |  |  |
Finance leases | 0 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 01-01-18 to 03-31-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 311 |  |  |  |
Finance leases | 0 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 04-01-18 to 06-30-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 311 |  |  |  |
Finance leases | 0 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 07-01-18 to 09-30-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 311 |  |  |  |
Finance leases | 0 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 10-01-18 to 12-31-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 311 |  |  |  |
Finance leases | 56,891 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | Until 12-31-2016 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 109,528 |  |
Finance leases |  |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 01-01-17 to 03-31-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 459 |  |
Finance leases |  |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 04-01-17 to 06-30-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 459 |  |
Finance leases |  |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 07-01-17 to 09-30-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 459 |  |
Finance leases |  |  | 0 |  |
Liquidity Risk [Member] | With Specified Maturity Over Due [Member] | From 10-01-17 to 12-31-17 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 459 |  |
Finance leases |  |  | 41,545 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 27,120,439 |  | 6,036,902 |  |
Other financial liabilities | 3,374,485 |  | 2,425,839 |  |
Finance leases | 2,142,681 |  | 1,770,935 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 01-01-19 to 03-31-19 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 3,352,746 |  |  |  |
Finance leases | 70,499 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 04-01-19 to 06-30-19 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 636,188 |  |  |  |
Other financial liabilities | 21,739 |  |  |  |
Finance leases | 70,499 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 07-01-19 to 09-30-19 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 0 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 70,499 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 10-01-19 to 12-31-19 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 636,188 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 70,499 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 01-01-18 to 03-31-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 2,300,495 |  |
Finance leases |  |  | 51,490 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 04-01-18 to 06-30-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 2,012,300 |  |
Other financial liabilities |  |  | 125,344 |  |
Finance leases |  |  | 51,490 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 07-01-18 to 09-30-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 51,490 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 10-01-18 to 12-31-18 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 169,249 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 51,490 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2020 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 1,272,375 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 282,034 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2021 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 1,272,375 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 282,034 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2022 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 1,272,375 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 282,034 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2023 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 1,272,375 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 282,034 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 2024 onwards [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 20,758,563 |  |  |  |
Other financial liabilities | 0 |  |  |  |
Finance leases | 732,549 |  |  |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2019 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 2,012,300 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 205,985 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2020 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 1,843,053 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 205,985 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2021 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 205,985 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | During 2022 [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 205,985 |  |
Liquidity Risk [Member] | With Specified Maturity Non-Due [Member] | From 2023 onwards [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans |  |  | 0 |  |
Other financial liabilities |  |  | 0 |  |
Finance leases |  |  | 741,035 |  |
Liquidity Risk [Member] | With Specified Maturity [Member] |  |  |  |  |
Maturities of financial liabilities [Abstract] |  |  |  |  |
Loans | 27,120,439 |  | 6,036,902 |  |
Other financial liabilities | 3,479,326 |  | 2,537,203 |  |
Finance leases | $ 2,199,572 |  | $ 1,812,480 |  |
[1] | Issuance expenses net for Ps. 120,420 and Ps. 12,584 as of December 31, 2018 and 2017, respectively.

X
- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_Borrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of liabilities related to finance leases. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2019-01-01 -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-02&anchor=para_55&doctype=Standard&book=b -URIDate 2018-03-16 + Details
Name: | ifrs-full_FinanceLeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph m -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_m&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_OtherFinancialLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_LiquidityRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_PastDueStatusAxis=tgs_WithoutSpecifiedMaturityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_PastDueStatusAxis=tgs_WithSpecifiedMaturityOverDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturitiesPriorYear2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityCurrentYear2018PeriodOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityCurrentYear2018PeriodTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityCurrentYear2018PeriodThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityCurrentYear2018PeriodFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturitiesPriorYear2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityCurrentYear2017PeriodOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityCurrentYear2017PeriodTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityCurrentYear2017PeriodThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityCurrentYear2017PeriodFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_PastDueStatusAxis=tgs_WithSpecifiedMaturityNonDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityNextYear2019PeriodOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityNextYear2019PeriodTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityNextYear2019PeriodThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityNextYear2019PeriodFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityNextYear2018PeriodOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityNextYear2018PeriodTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityNextYear2018PeriodThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_MaturityNextYear2018PeriodFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_LaterThanOneYearAndNotLaterThanTwoYears2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_LaterThanTwoYearsAndNotLaterThanThreeYears2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_LaterThanThreeYearsAndNotLaterThanFourYears2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_LaterThanFourYearsAndNotLaterThanFiveYears2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=tgs_LaterThanFiveYears2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_PastDueStatusAxis=tgs_WithSpecifiedMaturityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |