XML 18 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document and Entity Information
 12 Months Ended
Dec. 31, 2017
shares
Entity Information [Line Items]  
Entity Registrant Name GAS TRANSPORTER OF THE SOUTH INC
Entity Central Index Key 0000931427
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Filer Category Large Accelerated Filer
Entity Common Stock, Shares Outstanding 794,495,283
Document Fiscal Year Focus 2017
Document Fiscal Period Focus FY
Document Type 20-F
Amendment Flag false
Document Period End Date Dec. 31, 2017
Class "A" Shares [Member]  
Entity Information [Line Items]  
Entity Common Stock, Shares Outstanding 405,192,594
Class "B" Shares [Member]  
Entity Information [Line Items]  
Entity Common Stock, Shares Outstanding 389,302,689