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Summary of Business and Significant Accounting Policies (Tables)
9 Months Ended
Oct. 31, 2019
Accounting Policies [Abstract]  
Schedule of Property and Equipment
Property and equipment are stated at cost. Depreciation is calculated on a straight-line basis over the estimated useful lives of those assets as follows:
Computers, equipment and software
3 to 9 years
Furniture and fixtures5 years
Leasehold improvements
Shorter of the estimated lease term or 10 years
Building and structural components
Average weighted useful life of 32 years
Building improvements10 years