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SUBSIDIARIES | 12 Months Ended
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Dec. 31, 2020
Interests In Other Entities [Abstract] |
SUBSIDIARIES | SUBSIDIARIES The following table presents details of non-wholly owned subsidiaries of our company as of December 31 for the years indicated:
|  |  |  | Country of incorporation |  | Effective Ownership Interest (%) |  | Voting Interest (%)
Defined Name |  | Name of entity |  | 2020 |  | 2019 |  | 2018 |  | 2020 |  | 2019 |  | 2018
U.K. regulated distribution operation |  | BUUK Infrastructure No 1 Limited |  | U.K. |  | 80 |  | 80 |  | 80 |  | 80 |  | 80 |  | 80
Brazilian regulated gas transmission operation(1) |  | Nova Transportadora do Sudeste S.A.(1) |  | Brazil |  | 28 |  | 28 |  | 28 |  | 90 |  | 90 |  | 90
(1)Our company has entered into voting arrangements to provide our company with the ability to direct the relevant activities of the investee. Our company controls this investee given that our company is exposed, or has rights, to variable returns from its involvement with the investee and has the ability to affect those returns through its power over the investee. Our company exercises judgment to determine the level of variability that will achieve control over an investee, particularly in circumstances where our company’s voting interest differs from its ownership interest in an investee. The following were considered to determine whether our company controls this investee: the degree of power (if any) held by other investors, the degree of exposure to variability of each investor, the determination of whether any general partner removal rights are substantive and the purpose and design of the investee.

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- Definition The disclosure of subsidiaries. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2020-01-01 -Paragraph 17 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_17_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2020-01-01 -Paragraph 16 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_16_b&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph B4 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B4_a&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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