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Fixed Assets
 12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Fixed Assets and Lease Commitments
Fixed assets consisted of the following at December 31 (in millions):
 
2019
 
2018
Leasehold improvements
$
37.2

 
$
38.0

Office equipment
20.0

 
30.1

Furniture and fixtures
9.0

 
8.9

Building
2.9

 
2.9

Software and web development
78.5

 
50.8

Fixed assets, at cost
147.6

 
130.7

Accumulated depreciation and amortization
(81.8
)
 
(81.7
)
Fixed assets, net
$
65.8

 
$
49.0


Depreciation and amortization expense for continuing operations was $17.2 million, $14.5 million and $11.7 million for the years ended December 31, 2019, 2018 and 2017, respectively.