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Asset Impairment (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Indefinite-lived Intangible Assets [Line Items] |  |
Impairment of intangible assets | $ 0.0 | $ 17.5
Presque Isle |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Fair value |  | 62.6
Presque Isle | Gaming |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Impairment of intangible assets |  | 12.5
Gaming Rights | Presque Isle |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Carrying value |  | 77.6
Impairment of intangible assets |  | 15.0
Gaming Rights | Presque Isle | TwinSpires |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Impairment of intangible assets |  | 2.5
Trademarks | Presque Isle |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Impairment of intangible assets |  | $ 2.5

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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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- Definition Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. + References No definition available. + Details
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