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Share-Based Compensation (Share-Based Compensation Valuation of Stock Options) (Details) | 6 Months Ended
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Jul. 31, 2021 shares
Share-based Payment Arrangement, Noncash Expense [Abstract] |
Stock options granted | 0

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- References No definition available. + Details
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- Definition Number of shares of stock issued attributable to transactions classified as other. + References No definition available. + Details
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