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GOODWILL (Tables) | 12 Months Ended
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Dec. 31, 2021
Intangible Assets [Abstract] |
Disclosure of reconciliation of changes in intangible assets and goodwill | The following table presents the carrying amount for Brookfield Infrastructure’s goodwill:
US$ MILLIONS |  | 2021 |  | 2020
Balance at beginning of the year |  | $ | 6,634 |  |  | $ | 6,553 |
Acquisitions through business combinations(1) |  | 2,400 |  |  | 27 |
Assets held by subsidiaries disposed during the period(2) |  | (56) |  |  | — |
Foreign currency translation and other |  | 1 |  |  | 54 |
Balance at end of the year |  | $ | 8,979 |  |  | $ | 6,634 |
(1)See Note 6, Acquisition of Businesses, for additional information. (2)See Note 5, Disposition of Businesses, for additional information.
Disclosure of detailed information about intangible assets | Intangible assets are allocated to the following cash generating units:
US$ MILLIONS |  | 2021 |  | 2020
Brazilian regulated transmission operation |  | $ | 2,645 |  |  | $ | 2,903 |
Canadian diversified midstream operation(2) |  | 2,536 |  |  | — |
North American rail operations |  | 1,867 |  |  | 1,929 |
North American residential energy infrastructure operation |  | 1,720 |  |  | 1,748 |
Brazilian electricity transmission operation(2) |  | 1,366 |  |  | 270 |
Peruvian toll roads |  | 976 |  |  | 1,073 |
Indian telecom tower operation(2) |  | 782 |  |  | 537 |
Indian toll roads(1) |  | 658 |  |  | 714 |
U.K. telecom towers operation |  | 480 |  |  | 491 |
U.K. port operation |  | 289 |  |  | 292 |
Other(3) |  | 895 |  |  | 985 |
Chilean toll roads(4) |  | — |  |  | 825 |
Total |  | $ | 14,214 |  |  | $ | 11,767 |
(1)Indian toll roads include $604 million of intangible assets at our investments in Simhapuri Expressway Limited and Rayalseema Expressway Limited and $54 million at BIF India Holdings Pte Ltd. (2)Refer to Note 6, Acquisition of Businesses, for further details. (3)Other intangibles are primarily comprised of customer contracts at our Western Canadian natural gas gathering and processing operation, U.S. data center operation, Colombian natural gas transmission operation and our natural gas operation in India. (4)Refer to Note 5, Disposition of Businesses, for further details. Goodwill is allocated to the following cash generating units or group of cash generating units:
US$ MILLIONS |  | 2021 |  | 2020
Canadian diversified midstream operation(1) |  | $ | 2,125 |  |  | $ | — |
North American rail operations |  | 2,105 |  |  | 2,126 |
North American residential energy infrastructure operation |  | 1,356 |  |  | 1,296 |
Western Canadian natural gas gathering and processing operation |  | 762 |  |  | 756 |
U.S. data center operation |  | 503 |  |  | 487 |
Brazilian regulated transmission operation |  | 456 |  |  | 490 |
Colombian natural gas distribution operation |  | 433 |  |  | 520 |
U.K. telecom tower operation |  | 341 |  |  | 345 |
Other |  | 898 |  |  | 614 |
Total |  | $ | 8,979 |  |  | $ | 6,634 |
(1)See Note 6, Acquisition of Businesses, for additional information.

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