| **Significant Accounting Policies - Additional Information (Details) $ in Millions**       | 12 Months Ended |
|--------------------------------------------------------------------------------------------|-----------------|
||
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Revenue contract, term (in years)                                                          | 1 year          |   |   |
| Number of performance obligations | obligation                                             | 2               |   |   |
| Advertising and marketing expense                                                          | $ 83.4          | $ 52.9 | $ 74.5 |
| Minimum | Other                                                                            |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Useful life (in years)                                                                     | 7 years         |   |   |
| Maximum | Other                                                                            |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Useful life (in years)                                                                     | 15 years        |   |   |
| Grandstands and buildings | Minimum                                                        |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Property, plant, and equipment, useful life                                                | 10 years        |   |   |
| Grandstands and buildings | Maximum                                                        |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Property, plant, and equipment, useful life                                                | 40 years        |   |   |
| Equipment | Minimum                                                                        |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Property, plant, and equipment, useful life                                                | 2 years         |   |   |
| Equipment | Maximum                                                                        |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Property, plant, and equipment, useful life                                                | 10 years        |   |   |
| Furniture and fixtures | Minimum                                                           |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Property, plant, and equipment, useful life                                                | 2 years         |   |   |
| Furniture and fixtures | Maximum                                                           |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Property, plant, and equipment, useful life                                                | 10 years        |   |   |
| Tracks and other improvements | Minimum                                                    |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Property, plant, and equipment, useful life                                                | 10 years        |   |   |
| Tracks and other improvements | Maximum                                                    |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Property, plant, and equipment, useful life                                                | 20 years        |   |   |
| Internally developed and purchased third party software                                    |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Capitalized computer software developed or acquired for internal use                       | $ 13.2          | 11.2 | 10.7 |
| Capitalized computer software developed or acquired for internal use, amortization expense | $ 11.2          | $ 10.7 | $ 10.3 |
| Internally developed and purchased third party software | Maximum                          |            |   |   |
| **Variable Interest Entity [Line Items]**                                                  |            |   |   |
| Property, plant, and equipment, useful life                                                | 3 years         |   |   |

| X                                                                                                                                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| - Definition
Amount of expense for amortization of capitalized computer software costs.
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| - Definition
The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.
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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
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| - Definition
The total expense recognized in the period for promotion, public relations, and brand or product advertising.
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| - Definition
Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.
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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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