Property and Equipment (Narratives) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Net book value	$ 55.0	$ 54.9
Software Development
Property, Plant and Equipment [Line Items]
Net book value	27.7	23.4
Software Development Work-in-Progress
Property, Plant and Equipment [Line Items]
Net book value	$ 8.2	$ 3.6

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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