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Inventories | 12 Months Ended
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Dec. 31, 2023
Inventories [Abstract] |
Inventories | 14. Inventories
(CAD$ in millions) |  | December 31, 2023 |  | December 31, 2022
Supplies |  | $ | 1,318 |  |  | $ | 1,045 |
Raw materials |  | 277 |  |  | 278 |
Work in process |  | 1,046 |  |  | 857 |
Finished products |  | 655 |  |  | 718 |
|  | 3,296 |  |  | 2,898 |
Less non-current portion (Note 15) |  | (350) |  |  | (213) |
|  | $ | 2,946 |  |  | $ | 2,685 |
Cost of sales of $9.9 billion (2022 – $8.7 billion) includes $8.9 billion (2022 – $7.7 billion) of production costs that were recognized as part of inventories and subsequently expensed when sold during the year. Total inventories held at net realizable value amounted to $49 million at December 31, 2023 (2022 – $40 million). Total inventory write-downs in 2023 were $26 million (2022 – $50 million) and were included as part of cost of sales. Non-current inventories consist of ore stockpiles and other in-process materials that are not expected to be sold within one year.

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