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Share Capital - Common Shares Outstanding (Details) - shares | 12 Months Ended
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Jan. 31, 2025 | Jan. 31, 2024 | Jan. 31, 2023
Share Capital |  |  |
Balance, beginning of year (in shares) | 85,183,455 | 84,820,000 | 84,756,000
Stock options and share units exercised (in shares) | 423,000 | 363,000 | 64,000
Balance, end of year (in shares) | 85,605,969 | 85,183,455 | 84,820,000

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