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Property, Equipment, and Capitalized Software
 12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Property, Equipment, and Capitalized Software Property, Equipment, and Capitalized Software, net

The following table shows our property, equipment, and capitalized software, net summarized by major category:

 
 
As of December 31
(in millions)
 
2019
 
2018
Capitalized software
 
$
328.3

 
$
294.8

Capitalized equipment
 
70.1

 
83.5

Furniture and fixtures
 
33.7

 
29.6

Leasehold improvements
 
92.1

 
77.3

Telephone equipment
 
2.3

 
2.1

Construction in progress
 
5.5

 
7.9

Property, equipment, and capitalized software, at cost
 
532.0

 
495.2

Less accumulated depreciation
 
(377.3
)
 
(351.7
)
Property, equipment, and capitalized software, net
 
$
154.7

 
$
143.5



The following table summarizes our depreciation expense:
(in millions)
 
2019
 
2018
 
2017
Depreciation expense
 
$
81.2

 
$
76.0

 
$
67.6