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GOODWILL | 12 Months Ended
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Dec. 31, 2021
Intangible Assets [Abstract] |
GOODWILL | GOODWILL The following table presents the carrying amount for our company’s goodwill:
|  | As of
US$ MILLIONS |  | Dec. 31, 2021 |  | Dec. 31, 2020
Balance at beginning of the year |  | $ | 528 |  |  | $ | 667 |
Foreign currency translation and other |  | (39) |  |  | (139) |
Balance at end of the year |  | $ | 489 |  |  | $ | 528 |
Goodwill is evaluated for impairment annually or more often if events or circumstances indicate there may be impairment. Impairment is determined by assessing if the carrying value of cash generating units or a group of cash generating units, including the allocated goodwill, exceeds its recoverable amount determined as the greater of the estimated fair value less costs of disposal or the value in use. During 2021, the carrying amount of each cash generating unit was determined to not exceed its recoverable amount. Goodwill is allocated to the following cash generating units or group of cash generating units:
|  | As of
US$ MILLIONS |  | Dec. 31, 2021 |  | Dec. 31, 2020
U.K. regulated distribution operation |  | $ | 33 |  |  | $ | 38 |
Brazilian regulated gas transmission operation |  | 456 |  |  | 490 |
Total |  | $ | 489 |  |  | $ | 528 |
The recoverable amount of the goodwill has been determined using a discounted cash flow model whereby the fair value measurement is classified under level 3 on the fair value hierarchy. The key inputs in determining the fair value of each cash generating unit under the discounted cash flow model are the utilization of discount rates ranging from 7% to 14%, terminal value multiples of 6x to 20x and discrete cash flow periods from 10 to 20 years.

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- Definition The disclosure of goodwill. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_10_e&doctype=Standard -URIDate 2021-03-24 + Details
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