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BUSINESS DESCRIPTION (Tables)	12 Months Ended
	Dec. 31, 2022
BUSINESS DESCRIPTION [Abstract]
Organizational Structure, Shareholders and Related Parties	The following table shows the organizational structure, shareholders and related parties of tgs as of December 31, 2022: 44%, 24%, 8%, 12%, 5%, 51%, 49%, 51%, 49%, 99.98%, 0.02%, 80%, 15%, 5%, 100%, 49%, 25.5%, 20.4%, 5.1%

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Namespace Prefix:	tgs_
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The disclosure of major shareholders, subsidiaries and associates.

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Name:	tgs_DisclosureOfMajorShareholdersSubsidiariesAndAssociatesTableTextBlock
Namespace Prefix:	tgs_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration