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Fixed Assets
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Fixed Assets

6. Fixed Assets

Major classes of fixed assets consist of the following (in millions):

 

 

 

December 31,

 

 

 

2023

 

 

2022

 

Office equipment

 

$

32.9

 

 

$

32.2

 

Furniture and fixtures

 

 

154.1

 

 

 

142.0

 

Leasehold improvements

 

 

232.6

 

 

 

190.7

 

Computer equipment

 

 

353.5

 

 

 

295.8

 

Land and buildings - corporate headquarters

 

 

168.9

 

 

 

145.3

 

Software

 

 

722.9

 

 

 

583.4

 

Other

 

 

31.3

 

 

 

16.9

 

Work in process

 

 

54.1

 

 

 

56.0

 

 

 

1,750.3

 

 

 

1,462.3

 

Accumulated depreciation

 

 

(1,023.9

)

 

 

(886.1

)

Net fixed assets

 

$

726.4

 

 

$

576.2

 

 

The amounts in work in process in the table above primarily are for capitalized expenditures incurred related to IT development projects in 2023 and 2022.