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Property, Plant, and Equipment | 12 Months Ended
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Dec. 31, 2023
Disclosure of detailed information about property, plant and equipment [abstract] |
Property, Plant, and Equipment | Property, Plant and Equipment A reconciliation of the changes in the carrying amount of PP&E is as follows:
| Assets under construction | Land | Hydro | Wind and Solar | Gas generation | Energy Transition | Capital spares and other(1) | Total |
Cost |  |  |  |  |  |  |  |  |
As at Dec. 31, 2021 | 184 |  | 96 |  | 867 |  | 3,276 |  | 4,087 |  | 4,513 |  | 366 |  | 13,389 |  |
Additions(2) | 891 |  | — |  | — |  | — |  | — |  | — |  | 6 |  | 897 |  |
Additions from development projects | 17 |  | — |  | — |  | — |  | — |  | — |  | 12 |  | 29 |  |
Disposals | — |  | (3) |  | — |  | — |  | (1) |  | (216) |  | — |  | (220) |  |
Impairment (charges) reversals (Note 7) | 2 |  | — |  | (21) |  | (43) |  | — |  | — |  | — |  | (62) |  |
Changes to decommissioning and restoration costs (Note 23) | — |  | — |  | (15) |  | (59) |  | (12) |  | 10 |  | 2 |  | (74) |  |
Retirement of assets | — |  | — |  | (9) |  | (9) |  | (12) |  | (7) |  | (2) |  | (39) |  |
Change in foreign exchange rates | 13 |  | — |  | — |  | 45 |  | (4) |  | 97 |  | 2 |  | 153 |  |
Transfers of assets(3) | (144) |  | — |  | 18 |  | 23 |  | 472 |  | (423) |  | (7) |  | (61) |  |
As at Dec. 31, 2022 | 963 |  | 93 |  | 840 |  | 3,233 |  | 4,530 |  | 3,974 |  | 379 |  | 14,012 |  |
Additions(2) | 869 |  | — |  | — |  | — |  | — |  | — |  | 6 |  | 875 |  |
Disposals | — |  | (3) |  | — |  | — |  | — |  | (30) |  | — |  | (33) |  |
Impairment reversals (Note 7) | — |  | — |  | 10 |  | 4 |  | — |  | — |  | — |  | 14 |  |
Changes to decommissioning and restoration costs (Note 23) | — |  | — |  | 3 |  | 14 |  | (22) |  | 3 |  | (1) |  | (3) |  |
Retirement of assets | — |  | — |  | (7) |  | (18) |  | (124) |  | (7) |  | (108) |  | (264) |  |
Change in foreign exchange rates | (26) |  | — |  | — |  | (18) |  | (7) |  | (42) |  | (1) |  | (94) |  |
Transfers of assets(3) | (572) |  | — |  | 38 |  | 439 |  | 50 |  | 16 |  | 31 |  | 2 |  |
Transfers to finance lease receivable (Note 17) | — |  | — |  | — |  | (61) |  | (4) |  | — |  | — |  | (65) |  |
As at Dec. 31, 2023 | 1,234 |  | 90 |  | 884 |  | 3,593 |  | 4,423 |  | 3,914 |  | 306 |  | 14,444 |  |
Accumulated depreciation |  |  |  |  |  |  |  |  |
As at Dec. 31, 2021 | — |  | — |  | 468 |  | 1,093 |  | 2,178 |  | 4,150 |  | 180 |  | 8,069 |  |
Depreciation | — |  | — |  | 21 |  | 130 |  | 308 |  | 63 |  | 16 |  | 538 |  |
Retirement of assets | — |  | — |  | (8) |  | (6) |  | (10) |  | (7) |  | (2) |  | (33) |  |
Disposals | — |  | — |  | — |  | — |  | (1) |  | (211) |  | — |  | (212) |  |
Change in foreign exchange rates | — |  | — |  | — |  | 11 |  | 2 |  | 89 |  | — |  | 102 |  |
Transfers of assets(3) | — |  | — |  | (3) |  | — |  | 335 |  | (340) |  | — |  | (8) |  |
As at Dec. 31, 2022 | — |  | — |  | 478 |  | 1,228 |  | 2,812 |  | 3,744 |  | 194 |  | 8,456 |  |
Depreciation | — |  | — |  | 25 |  | 129 |  | 342 |  | 73 |  | 16 |  | 585 |  |
Retirement of assets | — |  | — |  | (4) |  | (15) |  | (101) |  | (7) |  | (108) |  | (235) |  |
Disposals | — |  | — |  | — |  | — |  | — |  | (30) |  | — |  | (30) |  |
Change in foreign exchange rates | — |  | — |  | — |  | (5) |  | (3) |  | (39) |  | — |  | (47) |  |
Transfers in (out) of PP&E(3) | — |  | — |  | — |  | — |  | (1) |  | 2 |  | — |  | 1 |  |
As at Dec. 31, 2023 | — |  | — |  | 499 |  | 1,337 |  | 3,049 |  | 3,743 |  | 102 |  | 8,730 |  |
Carrying amount |  |  |  |  |  |  |  |  |
As at Dec. 31, 2021 | 184 |  | 96 |  | 399 |  | 2,183 |  | 1,909 |  | 363 |  | 186 |  | 5,320 |  |
As at Dec. 31, 2022 | 963 |  | 93 |  | 362 |  | 2,005 |  | 1,718 |  | 230 |  | 185 |  | 5,556 |  |
As at Dec. 31, 2023 | 1,234 |  | 90 |  | 385 |  | 2,256 |  | 1,374 |  | 171 |  | 204 |  | 5,714 |  |
(1)Includes major spare parts and standby equipment available, but not in service. (2)In 2023, the Company capitalized $57 million (2022 – $16 million) of interest to PP&E in at a weighted average rate of 6.3 per cent (2022 – 6.0 per cent). (3)Includes transfers of assets upon commissioning to assets in service and other movements. Assets under Construction During the year, the Company achieved commercial operations on the Garden Plain wind facility and the Northern Goldfields solar and battery storage facilities. Costs were transferred from assets under construction to the Wind and Solar segment. In addition, the Kent Hills Foundation Rehabilitation project was substantially completed and the costs were transferred to the Wind and Solar segment. Change in Estimate - Useful Lives

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