XML 53 R32.htm IDEA: XBRL DOCUMENT
v3.19.1

SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
SIGNIFICANT ACCOUNTING POLICIES [Abstract] |
Impact of New Standards in the Statement of Financial Position | The following table shows the impact in the Statement of Financial Position as January 1, 2018:
| Balances as of 31/12/2017 | IFRS 15 impact | Balances as of 01/01/2018
Current liabilities |  |  |
Advances from customers | 216,820 | (216,820) | -
Contract liabilities | - | 216,820 | 216,820
Total | 216,820 | - | 216,820
Non current liabilities |  |  |
Advances from customers | 1,535,140 | (1,535,140) | -
Contract liabilities | - | 1,535,140 | 1,535,140
Total | 1,535,140 | - | 1,535,140
Comparison of Measurement Criteria Used for Financial Assets | The table below shows a comparison of the measurement criteria used for financial assets according to IAS 39, in contrast to the criteria used since the adoption of IFRS 9:
Financial instrument |  | Classification under IAS 39 | Classification under IFRS 9
Cash and banks |  | Loans and other receivables | Amortized cost
Mutual funds |  | Fair value through profit or loss | Fair value through profit or loss
Bank accounts |  | Loans and other receivables | Amortized cost
Government bonds (BONAR 2020) |  | Fair value through profit or loss | Fair value through profit or loss
Private bonds |  | Fair value through profit or loss | Fair value through profit or loss
Government bonds (LETES) |  | Held to maturity | Amortized cost
Government bonds (Central Bank Notes) |  | Held to maturity | Amortized cost
VRD bonds |  | Loans and other receivables | Amortized cost
Trade receivables |  | Loans and other receivables | Amortized cost
Other receivables |  | Loans and other receivables | Amortized cost
Subsidiary Control | Detailed data reflecting subsidiary control as of December 31, 2018 and 2017 is as follows:
| % of shareholding |  |  |
Company | and votes | Country | Closing date | Main activity
TGU | 99.98 | Argentina | December 31 | Telecommunication Services
CTG (1) | 100.00 | Argentina | December 31 | Electricity related services
(1) 100% of the shares of this company were acquired on August 8, 2017. At present, it is in the process of being transformed into S.A.U.
Associates | In the table below, associates are disclosed, together with the percentage of shareholding and voting as of December 31, 2018 and 2017:
| % of Shareholding |  |  |
Company | and voting | Country | Main activity | Closing date
TGU | 49.00 | Uruguay | Pipeline maintenance | December 31
EGS (“in liquidation”) | 49.00 | Argentina | Pipeline exploitation and construction | December 31
Link | 49.00 | Argentina | Pipeline exploitation and construction | December 31
Effect of New Standards Adopted | The effects of adopting IAS 29 on equity at the transition date and as of December 31, 2017 and 2018 and the results for the year 2016 and 2017 are as follows:
|  | Balances as of 01/01/2016 |  |  | Balances as of 12/31/2016 |  |  | Balances as of 12/31/2017 |
Total equity according to financial statements approved on 04/13/2018 |  |  | 1,695,434 |  |  |  | 2,526,378 |  |  |  | 5,319,640 |
Increase due to adjustment of common stock |  |  | 17,321,734 |  |  |  | 17,321,734 |  |  |  | 17,321,734 |
(Decrease) / increase in accumulated retained earnings |  |  | (368,161 | ) |  |  | (319,709 | ) |  |  | 2,638,215 |
Total equity after the application of IAS 29 |  |  | 18,649,007 |  |  |  | 19,528,403 |  |  |  | 25,279,589 |
|  |  |  |  |  |  | 2016 |  |  |  | 2017 |
Total comprehensive income for the year ended December 31, 2016 and 2017 according to financial statements approved on 04/13/2018 |  |  |  |  |  |  | 930,678 |  |  |  | 2,793,266 |
Gain on net monetary position |  |  |  |  |  |  | 1,038,647 |  |  |  | 465,975 |
Restatement of income / (expense) items including income tax |  |  |  |  |  |  | (863,030 | ) |  |  | 2,491,952 |
Total comprehensive income after the application of IAS 29 |  |  |  |  |  |  | 1,106,295 |  |  |  | 5,751,193 |
Earnings Per Share | Earnings per share as of December 31, 2018, 2017 and 2016 were calculated as follows:
|  | 2018 |  |  | 2017 |  |  | 2016 |
Net income attributable to owners of the Company |  |  | 11,415,836 |  |  |  | 5,751,193 |  |  |  | 1,106,295 |
Average number of outstanding shares |  |  | 788,405,563 |  |  |  | 794,495,283 |  |  |  | 794,495,283 |
Basic and diluted earnings per share |  |  | 14.48 |  |  |  | 7.24 |  |  |  | 1.39 |

X
- Definition The disclosure of the known or reasonably estimable information relevant to assessing the possible impact that the application of a new IFRS, that has been issued but is not yet effective, will have. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 8 -IssueDate 2018-01-01 -Paragraph 30 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=8&date=2018-03-01&anchor=para_30_b&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of financial assets at the date of initial application of IFRS 9. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 42I -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_42I&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_DisclosureOfFinancialAssetsAtDateOfInitialApplicationOfIFRS9Explanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of associates. [Refer: Associates [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_17_b&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 16 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_16_b&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph B4 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_B4_d&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
Name: | ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of subsidiaries. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_17_b&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 16 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_16_b&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph B4 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_B4_a&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
Name: | ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2018-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2018-03-01&anchor=para_66&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_EarningsPerShareExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The tabular disclosure showing the impact of initial application of new standards related to financial reporting in hyperinflationary economies or IAS 29. + References No definition available. + Details
Name: | tgs_DisclosureOfImpactOfInitialApplicationOfNewStandardsRelatedToFinancialReportingInHyperinflationaryEconomiesTableTextBlock
Namespace Prefix: | tgs_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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