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LOANS, Bank Loans (Details) - Bank Loans [Member] - Telcosur S.A. [Member] $ in Millions	Mar. 31, 2022 USD ($)
Bank loans [Abstract]
Principal amount	$ 24
Interest rate	1.50%
Amortizacion date	Jan. 25, 2024
Interest payment frequency	To the expiration
Guarantee	Fixed term in foreign currency	[1]
[1] Included as “Non-current financial assets measured at amortised cost”.

X

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_7&doctype=Standard
-URIDate 2022-03-24

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2022-03-24

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Definition

Amortization date of borrowings, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	tgs_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The description of the frequency of interest payment.

+ References

No definition available.

+ Details

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

X

- Definition

Describes the guarantee for borrowings.

+ References

No definition available.

+ Details

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

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: