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Computer Equipment, Software, Furniture, and Leasehold Improvements, Net
 3 Months Ended
Apr. 30, 2025
Property, Plant and Equipment [Abstract]  
Computer Equipment, Software, Furniture, and Leasehold Improvements, Net Computer Equipment, Software, Furniture, and Leasehold Improvements, Net
Computer equipment, software, furniture and equipment, and leasehold improvements, and the related accumulated depreciation were as follows: 
April 30, 2025January 31, 2025
Computer hardware, at cost$106 $103 
Computer software, at cost46 42 
Furniture and equipment, at cost103 100 
Leasehold improvements, land and buildings, at cost335 333 
590 578 
Less: Accumulated depreciation(479)(461)
Computer equipment, software, furniture, and leasehold improvements, net$111 $117