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Inventories - Additional Information (Detail) - CAD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Cost of inventories recognised as expense | $ 308.5 | $ 153.4 | $ 577.9 | $ 311.1 | $ 757.9 | $ 937.7 | $ 1,631.2
Inventory write down | 0.1 | 1.0 | 1.0 | 2.6 | 6.1 | 5.4 | $ 5.9
Inventory work in progress related to finance leases | $ 11.7 | $ 14.3 | $ 40.9 | $ 14.3 | $ 36.2 | $ 0.0 |

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