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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2020
Inventories [Abstract] |
Summary of Inventories |
(CAD$ in millions) |  | December 31, 2020 |  | December 31, 2019
Supplies |  | $ | 757 |  |  | $ | 721 |
Raw materials |  | 197 |  |  | 271 |
Work in process |  | 592 |  |  | 491 |
Finished products |  | 410 |  |  | 573 |
|  | 1,956 |  |  | 2,056 |
Less long-term portion (Note 14) |  | (84) |  |  | (75) |
|  | $ | 1,872 |  |  | $ | 1,981 |

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