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INVENTORIES (Tables) | 12 Months Ended
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Mar. 31, 2021
Inventories [Abstract] |
Schedule of inventory |
|  | 2021 |  | 2020 |  |
Work in progress | $ | 446.0 |  | $ | 405.1 |  |  |
Raw materials, supplies and manufactured products |  | 201.8 |  |  | 211.1 |  |  |
Total inventories | $ | 647.8 |  | $ | 616.2 |  |  |
During the year ended March 31, 2021, use of inventory recognized in cost of sales amounted to $394.9 million (2020 ‑ $500.3 million), and impairment of inventories to net realizable value amounted to $34.0 million (2020 – $6.4 million).

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