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Asset Impairments (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Jun. 30, 2021 | Mar. 31, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Non-cash impairment charge |  |  |  |  |  | $ 38.3 | $ 15.3 | $ 17.5
TwinSpires |  |  |  |  |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Non-cash impairment charge |  | $ 4.9 | $ 4.1 |  |  |  |  |
Live and Historical Racing |  |  |  |  |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Non-cash impairment charge |  |  |  | $ 11.2 |  |  |  |
Presque Isle Downs & Casino |  |  |  |  |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Asset impairments |  |  |  |  | $ 15.0 |  |  |
Gaming rights | Presque Isle Downs & Casino |  |  |  |  |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Asset impairments | $ 33.4 |  |  |  |  |  |  |

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