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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2022
Disclosure of detailed information about goodwill [Abstract] |
Disclosure of detailed information about goodwill | A reconciliation of the changes in the carrying amount of intangible assets is as follows:
| Power sale contracts | Software and other | Intangibles under development | Coal rights | Total |
Cost |  |  |  |  |  |
As at Dec. 31, 2020 | 269 |  | 412 |  | 3 |  | 149 |  | 833 |  |
Additions | — |  | — |  | 9 |  | — |  | 9 |  |
Impairment charges (Note 7) | — |  | — |  | — |  | (17) |  | (17) |  |
Change in foreign exchange rates | — |  | (2) |  | — |  | — |  | (2) |  |
Transfers | — |  | 12 |  | (8) |  | — |  | 4 |  |
As at Dec. 31, 2021 | 269 |  | 422 |  | 4 |  | 132 |  | 827 |  |
Additions(1) | — |  | — |  | 31 |  | — |  | 31 |  |
Change in foreign exchange rates | 3 |  | 3 |  | 1 |  | — |  | 7 |  |
Transfers | — |  | 12 |  | (9) |  | — |  | 3 |  |
As at Dec. 31, 2022 | 272 |  | 437 |  | 27 |  | 132 |  | 868 |  |
Accumulated amortization |  |  |  |  |  |
As at Dec. 31, 2020 | 123 |  | 272 |  | — |  | 125 |  | 520 |  |
Amortization | 17 |  | 27 |  | — |  | 7 |  | 51 |  |
As at Dec. 31, 2021 | 140 |  | 299 |  | — |  | 132 |  | 571 |  |
Amortization | 17 |  | 26 |  | — |  | — |  | 43 |  |
Change in foreign exchange rates | 1 |  | 1 |  | — |  | — |  | 2 |  |
As at Dec. 31, 2022 | 158 |  | 326 |  | — |  | 132 |  | 616 |  |
Carrying amount |  |  |  |  |  |
As at Dec. 31, 2020 | 146 |  | 140 |  | 3 |  | 24 |  | 313 |  |
As at Dec. 31, 2021 | 129 |  | 123 |  | 4 |  | — |  | 256 |  |
As at Dec. 31, 2022 | 114 |  | 111 |  | 27 |  | — |  | 252 |  |
Goodwill acquired through business combinations has been allocated to groups of CGUs that are expected to benefit from the synergies of the acquisitions. Goodwill by segments is as follows:
As at Dec. 31 | 2022 | 2021
Hydro | 258 |  | 258 |
Wind and Solar | 176 |  | 175 |
Energy Marketing | 30 |  | 30 |
Total goodwill | 464 |  | 463 |

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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 2022-03-24 -Paragraph 118 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2022-en-r&anchor=para_118&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Disclosure of detailed information about goodwill [Abstract] + References No definition available. + Details
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