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Summary of Significant Accounting Policies - Disclosure of Detailed Information About Estimated Useful Lives of Property, Plant and Equipment (Details)
 6 Months Ended
Jul. 31, 2020
Leasehold Improvements [Member]  
Statement Line Items [Line Items]  
Useful lives or depreciation rates, property, plant and equipment 1 - 10 years and where shorter over the lease term
Plant, Furniture, Fittings and Motor Vehicles [Member]  
Statement Line Items [Line Items]  
Useful lives or depreciation rates, property, plant and equipment 3 - 7 years