| **Other Balance Sheet Items - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions** | Jun. 30, 2023 | Dec. 31, 2022 |
|------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Payables and Accruals [Abstract]**                                                                                         |          |          |
| Account wagering deposits liability                                                                                          | $ 52.9        | $ 57.8        |
| Purses payable                                                                                                               | 23.8          | 39.6          |
| Purses payable                                                                                                               | 49.0          | 46.1          |
| Accrued interest                                                                                                             | 48.8          | 47.8          |
| Accrued fixed assets                                                                                                         | 43.8          | 39.5          |
| Accrued gaming liabilities                                                                                                   | 25.6          | 26.3          |
| Other                                                                                                                        | 115.2         | 103.9         |
| Total                                                                                                                        | $ 359.1       | $ 361.0       |

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Account Wagering Deposits Liability, Current
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Accrued Fixed Assets, Current
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| X                                                                                                                                                                                                                                         |
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| - Definition
Accrued Gaming Liabilities
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Purses Payable, Current
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| - Definition
Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
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| - Definition
Amount of interest payable on debt, including, but not limited to, trade payables.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of liabilities classified as other.
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