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Computer Equipment, Software, Furniture and Leasehold Improvements, Net (Tables)
 3 Months Ended
Apr. 30, 2017
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Computer equipment, software, furniture, leasehold improvements and the related accumulated depreciation were as follows:
 
 
April 30, 2017
 
January 31, 2017
Computer hardware, at cost
$
210.0

 
$
206.1

Computer software, at cost
75.9

 
73.5

Leasehold improvements, land and buildings, at cost
208.1

 
206.3

Furniture and equipment, at cost
59.4

 
58.2

 
553.4


544.1

Less: Accumulated depreciation
(403.0
)
 
(385.5
)
Computer software, hardware, leasehold improvements, furniture and equipment, net
$
150.4

 
$
158.6