Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Other Financial Information - Property and Equipment, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property and Equipment [Line Items]
Property and equipment, gross	$ 1,922.5	$ 2,018.7
Accumulated depreciation	(1,255.7)	(1,315.7)
Property and equipment, net	666.8	703.0
Depreciation expense	137.7	151.0	$ 166.2
Computers and equipment
Property and Equipment [Line Items]
Property and equipment, gross	940.0	1,023.5
Software
Property and Equipment [Line Items]
Property and equipment, gross	220.3	226.8
Leasehold improvements
Property and Equipment [Line Items]
Property and equipment, gross	189.2	197.6
Furniture and fixtures
Property and Equipment [Line Items]
Property and equipment, gross	45.4	46.8
Building and building improvements
Property and Equipment [Line Items]
Property and equipment, gross	271.9	269.3
Land and land improvements
Property and Equipment [Line Items]
Property and equipment, gross	243.6	243.5
Construction-in-process
Property and Equipment [Line Items]
Property and equipment, gross	$ 12.1	$ 11.2