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Discontinued Operations - Additional Information (Details) $ / a in Millions, $ in Millions | Mar. 25, 2021 USD ($) | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Nov. 22, 2021 USD ($) a $ / a | Sep. 29, 2021 USD ($) a
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Kater And Thimmegowda Litigation |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Litigation settlement | $ 124.0 |  |  |  |
Arlington Property | Disposal Group, Held-for-sale, Not Discontinued Operations |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Area of land | a |  |  |  |  | 326
Purchase price |  |  |  |  | $ 197.2
Arlington International Racecourse | Disposal Group, Held-for-sale, Not Discontinued Operations |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Asset held for sale |  | $ 81.5 | $ 81.5 |  |
Calder Property | Disposal Group, Held-for-sale, Not Discontinued Operations |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Area of land | a |  |  |  | 115.7 |
Purchase price |  |  |  | $ 291.0 |
Asset held for sale |  | $ 6.3 | $ 6.3 |  |
Sale agreement, per acre | $ / a |  |  |  | 2.5 |

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