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Intangible Assets | 12 Months Ended
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Dec. 31, 2021
Disclosure of detailed information about intangible assets [abstract] |
Intangible Assets | Intangible Assets 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, 2019 | 250 |  | 378 |  | 11 |  | 149 |  | 788 |  |
Additions | — |  | — |  | 14 |  | — |  | 14 |  |
Acquisition (Note 4) | 37 |  | — |  | — |  | — |  | 37 |  |
Disposals | — |  | (1) |  | — |  | — |  | (1) |  |
Change in foreign exchange rates | (2) |  | — |  | — |  | — |  | (2) |  |
Transfers | (16) |  | 35 |  | (22) |  | — |  | (3) |  |
As at Dec. 31, 2020 | 269 |  | 412 |  | 3 |  | 149 |  | 833 |  |
Additions | — |  | — |  | 9 |  | — |  | 9 |  |
Impairment (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 |  |
Accumulated amortization |  |  |  |  |  |
As at Dec. 31, 2019 | 107 |  | 246 |  | — |  | 117 |  | 470 |  |
Amortization | 15 |  | 28 |  | — |  | 8 |  | 51 |  |
Disposals | — |  | (1) |  | — |  | — |  | (1) |  |
Transfers | 1 |  | (1) |  | — |  | — |  | — |  |
As at Dec. 31, 2020 | 123 |  | 272 |  | — |  | 125 |  | 520 |  |
Amortization | 17 |  | 27 |  | — |  | 7 |  | 51 |  |
As at Dec. 31, 2021 | 140 |  | 299 |  | — |  | 132 |  | 571 |  |
Carrying amount |  |  |  |  |  |
As at Dec. 31, 2019 | 143 |  | 132 |  | 11 |  | 32 |  | 318 |  |
As at Dec. 31, 2020 | 146 |  | 140 |  | 3 |  | 24 |  | 313 |  |
As at Dec. 31, 2021 | 129 |  | 123 |  | 4 |  | — |  | 256 |  |

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- References No definition available. + Details
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- Definition The entire disclosure for intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2021-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2021-en-r&doctype=Standard&dita_xref=IAS38_g118-128_TI -URIDate 2021-03-24 + Details
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