Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Building and leasehold improvements	$ 126.8	$ 134.2
Computer and data processing equipment	126.5	132.0
Construction in progress	50.8	23.3
Machinery and equipment	43.3	45.4
Land	27.7	27.7
Computer software	22.9	25.1
Furniture and fixtures	21.2	20.5
Revenue generating assets	0.0	212.0
Property and equipment, gross	419.2	620.2
Less: accumulated depreciation	(243.7)	(257.1)
Property and equipment, net	$ 175.5	$ 363.1
Revenue generating assets
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	1 year
Minimum | Building and leasehold improvements
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	5 years
Minimum | Computer and data processing equipment
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	3 years
Minimum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	5 years
Minimum | Computer software
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	3 years
Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	5 years
Maximum | Building and leasehold improvements
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	25 years
Maximum | Computer and data processing equipment
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	5 years
Maximum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	10 years
Maximum | Computer software
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	5 years
Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful Lives (Years)	10 years