ACQUISITION OF BUSINESSES (Details) - Brazilian regulated gas transmission operation $ in Millions	Apr. 30, 2021 USD ($)
Disclosure of detailed information about business combination [line items]
Proportion of ownership interest in subsidiary, additional	3.00%
Effective Ownership Interest (%)	31.00%
Consideration transferred, acquisition-date fair value	$ 87
Gain (loss) recognised as result of ownership changes	$ (32)
Consortium
Disclosure of detailed information about business combination [line items]
Proportion of ownership interest in subsidiary, additional	10.00%
Consideration transferred, acquisition-date fair value	$ 283

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- Definition

The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

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The gain (loss) recognised as result of remeasuring to fair value the equity interest in the acquiree held by the acquirer before the business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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- Definition

The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2021-01-01
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