Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,705.1	$ 1,781.3
Accumulated depreciation	(736.7)	(721.5)
Subtotal	$ 968.4	$ 1,059.8
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total	Total
Operating lease right-of-use assets	$ 26.5	$ 22.3
Total	994.9	1,082.1
Grandstands and buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	745.5	785.5
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	491.9	477.9
Tracks and other improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	221.7	240.7
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	101.3	164.2
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	78.9	89.7
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 65.8	$ 23.3