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Fixed Assets | 12 Months Ended
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Dec. 31, 2024
Property, Plant and Equipment [Abstract] |
Fixed Assets | 5. Fixed Assets Major classes of fixed assets consist of the following (in millions):
|  | December 31, |
|  | 2024 |  |  | 2023 |
Office equipment |  | $ | 34.2 |  |  | $ | 32.9 |
Furniture and fixtures |  |  | 151.8 |  |  |  | 154.1 |
Leasehold improvements |  |  | 259.9 |  |  |  | 232.6 |
Computer equipment |  |  | 362.6 |  |  |  | 353.5 |
Land and buildings - corporate headquarters |  |  | 171.6 |  |  |  | 168.9 |
Software |  |  | 720.7 |  |  |  | 722.9 |
Other |  |  | 41.3 |  |  |  | 31.3 |
Work in process |  |  | 64.2 |  |  |  | 54.1 |
|  |  | 1,806.3 |  |  |  | 1,750.3 |
Accumulated depreciation |  |  | (1,156.0 | ) |  |  | (1,023.9 | )
Net fixed assets |  | $ | 650.3 |  |  | $ | 726.4 |
The amounts in work in process in the table above primarily are for capitalized expenditures incurred related to IT development projects in 2024 and 2023.

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