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INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Dec. 31, 2020
Intangible Assets [Abstract] |
Disclosure of reconciliation of changes in intangible assets and goodwill |
|  | As of
US$ MILLIONS |  | Dec. 31, 2020 |  | Dec. 31, 2019
Cost |  | $ | 3,527 |  |  | $ | 4,479 |
Accumulated amortization |  | (579) |  |  | (543) |
Total |  | $ | 2,948 |  |  | $ | 3,936 |
The following table presents the change in the cost balance of intangible assets:
|  | For the year ended
US$ MILLIONS |  | Dec. 31, 2020 |  | Dec. 31, 2019
Cost at beginning of the year |  | $ | 4,479 |  |  | $ | 4,631 |
Additions, net of disposals |  | 35 |  |  | 21 |
Foreign currency translation |  | (987) |  |  | (173) |
Cost at end of year |  | $ | 3,527 |  |  | $ | 4,479 |
The following table presents the accumulated amortization for our company’s intangible assets:
|  | For the year ended
US$ MILLIONS |  | Dec. 31, 2020 |  | Dec. 31, 2019
Accumulated amortization at beginning of year |  | $ | (543) |  |  | $ | (364) |
Amortization |  | (152) |  |  | (195) |
Foreign currency translation |  | 116 |  |  | 16 |
Accumulated amortization at end of year |  | $ | (579) |  |  | $ | (543) |
Disclosure of detailed information about intangible assets | Intangible assets are allocated to the following cash generating units:
|  | As of
US$ MILLIONS |  | Dec. 31, 2020 |  | Dec. 31, 2019
Brazilian regulated gas transmission operation |  | $ | 2,903 |  |  | $ | 3,885 |
U.K. regulated distribution operation |  | 45 |  |  | 51 |
Total |  | $ | 2,948 |  |  | $ | 3,936 |

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- Definition The disclosure of information for cash-generating units. [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The disclosure of the reconciliation of changes in intangible assets and goodwill. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118&doctype=Standard -URIDate 2020-01-01 + Details
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