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Inventories | 12 Months Ended
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Dec. 31, 2021
Classes of current inventories [abstract] |
Inventories |
15. INVENTORIES
As at December 31, |  | 2021 |  |  |  | 2020 (1) |  |  |  |  |
Product |  |  |  |  |  |  |  |  |  |  |
Oil Sands |  | 1,419 |  |  |  | 382 |  |  |  |  |
Conventional |  | 78 |  |  |  | 1 |  |  |  |  |
Offshore |  | 39 |  |  |  | — |  |  |  |  |
Canadian Manufacturing |  | 88 |  |  |  | — |  |  |  |  |
U.S. Manufacturing |  | 2,001 |  |  |  | 613 |  |  |  |  |
Retail |  | 26 |  |  |  | — |  |  |  |  |
Parts and Supplies |  | 268 |  |  |  | 93 |  |  |  |  |
|  | 3,919 |  |  |  | 1,089 |  |  |  |  |
(1)Prior period results have been reclassified to conform with the current period’s operating segments. During the year ended December 31, 2021, approximately $34 billion of produced and purchased inventory was recorded as an expense (2020 – approximately $10 billion). As at December 31, 2021, the Company had no inventory write downs. During the twelve months ended December 31, 2021, the Company had $16 million of inventory write-downs. As at March 31, 2020, the Company recorded $588 million in non-cash inventory write-downs of its crude oil blend, condensate and refined product inventory. Subsequently, $547 million of inventory that was written down at the end of March was sold and the loss was realized. For the year ended December 31, 2020, the Company reversed $39 million of the inventory write-downs related to March product inventory that was still on hand due to improved refined product and crude oil prices. As at December 31, 2020, the Company recorded a $6 million write-down in refined product inventory.

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