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Computer Equipment, Software, Furniture and Leasehold Improvements, Net (Tables)
 9 Months Ended
Oct. 31, 2018
Property, Plant and Equipment [Abstract]  
Computer equipment, software, furniture, leasehold improvements and the related accumulated depreciation Computer equipment, software, furniture, leasehold improvements and the related accumulated depreciation were as follows:
 
 
October 31, 2018
 
January 31, 2018
Computer hardware, at cost
$
182.8

 
$
217.1

Computer software, at cost
65.1

 
72.6

Leasehold improvements, land and buildings, at cost
240.2

 
228.9

Furniture and equipment, at cost
62.3

 
63.4

 
550.4


582.0

Less: Accumulated depreciation
(405.7
)
 
(437.0
)
Computer software, hardware, leasehold improvements, furniture and equipment, net
$
144.7

 
$
145.0