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COMMON STOCK AND DIVIDENDS, Restrictions on Distribution of Retained Earnings (Details)	12 Months Ended
	Dec. 31, 2021
Restrictions on distribution of retained earnings [Abstract]
Percentage of legal reserve of net income	5.00%
Percentage of aggregate reserve	20.00%

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- Definition

Pursuant to the provisions of the Argentine Business Association Law and the CNV, minimum percentage of net income required to setup legal reserve.

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No definition available.

+ Details

Name:	tgs_PercentageOfAggregateAmountOfNetIncomeToSetupLegalReserve
Namespace Prefix:	tgs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

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- Definition

Refers to percentage of legal reserves on sum of capital stock and adjustment to capital stock balances.

+ References

No definition available.

+ Details

Name:	tgs_PercentageOfLegalReserveOnSumOfCapitalStockAndAdjustmentToCapitalStockBalances
Namespace Prefix:	tgs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	tgs_RestrictionsOnDistributionOfRetainedEarningsAbstract
Namespace Prefix:	tgs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration