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FINANCIAL RISK MANAGEMENT, Credit Risk, Provision for Losses (Details)	Dec. 31, 2021
Natural Gas Transportation Segment [Member] | 90 Days [Member]
Provision for Losses Trade Receivables [Abstract]
Provision for losses ratio	0.50%
Natural Gas Transportation Segment [Member] | 120 Days [Member]
Provision for Losses Trade Receivables [Abstract]
Provision for losses ratio	5.00%
Natural Gas Transportation Segment [Member] | 180 Days [Member]
Provision for Losses Trade Receivables [Abstract]
Provision for losses ratio	10.00%
Natural Gas Transportation Segment [Member] | +240 Days [Member]
Provision for Losses Trade Receivables [Abstract]
Provision for losses ratio	100.00%
Natural Gas Transportation Segment [Member] | Non-Due [Member]
Provision for Losses Trade Receivables [Abstract]
Provision for losses ratio	0.00%
Other Segments [Member] | 90 Days [Member]
Provision for Losses Trade Receivables [Abstract]
Provision for losses ratio	0.25%
Other Segments [Member] | 120 Days [Member]
Provision for Losses Trade Receivables [Abstract]
Provision for losses ratio	2.00%
Other Segments [Member] | 180 Days [Member]
Provision for Losses Trade Receivables [Abstract]
Provision for losses ratio	5.00%
Other Segments [Member] | +240 Days [Member]
Provision for Losses Trade Receivables [Abstract]
Provision for losses ratio	100.00%
Other Segments [Member] | Non-Due [Member]
Provision for Losses Trade Receivables [Abstract]
Provision for losses ratio	0.00%

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- Definition

The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-IssueDate 2021-01-01
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-URIDate 2021-03-24

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-URIDate 2021-03-24

+ Details

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

X

- References

No definition available.

+ Details

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- Details

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X

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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