| **Goodwill (Tables)**                                    | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
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| **Goodwill and Intangible Assets Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Schedule of Goodwill                                     | Goodwill, by segment, is comprised of the following:(in millions)Live and HistoricalTwinSpiresGamingAll OtherTotalBalance, December 31, 2021$52.4 $152.2 $161.2 $1.0 $366.8 Additions227.9 — 129.1 — 357.0 Balance, December 31, 2022280.3 152.2 290.3 1.0 723.8 Additions95.9 81.2 — — 177.1 Adjustments— — — (1.0)(1.0)Balance, December 31, 2023$376.2 $233.4 $290.3 $— $899.9  |

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| - References
No definition available.
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| - Definition
Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.
+ References
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