Supplemental Balance Sheet Information - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Payables and Accruals [Abstract]
Account wagering deposits liability	$ 79.2	$ 63.1
Accrued salaries and related benefits	34.6	57.7
Purses payable	40.5	35.4
Accrued interest	48.2	48.2
Accrued fixed assets	26.6	42.7
Accrued gaming liabilities	35.1	35.3
Accrued Insurance, Current	12.6	13.1
Accrual for Taxes Other than Income Taxes, Current	14.8	9.7
Lease Liability, Operating And Financing, Current	8.8	8.7
Other	91.8	88.1
Total	$ 392.2	$ 402.0