Fixed Assets

12 Months Ended

Dec. 31, 2020

Property Plant And Equipment [Abstract]

Fixed Assets

6.  Fixed Assets

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

	December 31,
	2020			2019
Office equipment	$	33.0		$	32.6
Furniture and fixtures		138.3			126.0
Leasehold improvements		166.0			150.2
Computer equipment		214.2			176.3
Land and buildings - corporate headquarters		145.1			144.9
Software		452.2			392.3
Other		16.7			19.0
Work in process		14.1			18.0
		1,179.6			1,059.3
Accumulated depreciation		(728.9	)		(591.9	)
Net fixed assets	$	450.7		$	467.4

The amounts in work in process in the table above primarily are for capitalized expenditures incurred related to IT development projects in 2020 and 2019.