Property and Equipment - Property and Equipment, Net (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 1,990.1	$ 1,749.1
Less: accumulated depreciation	(896.0)	(790.6)
Total property and equipment, net	1,094.1	958.5
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	892.5	876.1
Furniture and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	407.3	346.7
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	363.5	234.6
Computers and software
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	293.7	258.6
Land
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 33.1	$ 33.1