Leasehold Improvements, Equipment and Construction in Progress, net - Schedule of Leasehold Improvements (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Leasehold improvements, equipment and construction in progress, gross	$ 161.2	$ 155.3
Accumulated depreciation and amortization	(112.3)	(102.0)
Leasehold improvements, equipment and construction in progress, net	48.9	53.3
Equipment
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Leasehold improvements, equipment and construction in progress, gross	$ 51.0	50.1
Equipment \| Minimum
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Ranges of estimated useful life	1 year
Equipment \| Maximum
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Ranges of estimated useful life	10 years
Software
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Leasehold improvements, equipment and construction in progress, gross	$ 48.8	42.3
Software \| Minimum
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Ranges of estimated useful life	2 years
Software \| Maximum
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Ranges of estimated useful life	5 years
Vehicles
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Leasehold improvements, equipment and construction in progress, gross	$ 36.2	37.3
Vehicles \| Minimum
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Ranges of estimated useful life	1 year
Vehicles \| Maximum
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Ranges of estimated useful life	10 years
Other
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Leasehold improvements, equipment and construction in progress, gross	$ 1.0	0.8
Ranges of estimated useful life	3 years
Leasehold improvements
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Leasehold improvements, equipment and construction in progress, gross	$ 16.8	18.0
Leasehold improvements \| Maximum
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Ranges of estimated useful life	10 years
Construction in progress
Leasehold Improvements, Equipment, Land and Construction in Progress, Net
Leasehold improvements, equipment and construction in progress, gross	$ 7.4	$ 6.8

Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale, excluding land.

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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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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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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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