Supplemental Balance Sheet Information - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Account wagering deposits liability	$ 61.4	$ 58.7
Accrued salaries and related benefits	46.7	45.1
Purses payable	34.3	35.2
Accrued interest	75.6	49.4
Accrued fixed assets	53.7	88.6
Accrued gaming liabilities	34.4	29.5
Other	124.0	120.3
Total	$ 430.1	$ 426.8