Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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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.

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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.

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Amount of fair value of reporting unit in excess of carrying amount.

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Asset Impairments (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
Asset Impairments (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Indefinite-lived Intangible Assets [Line Items]
Asset impairments	$ 0.0		$ 0.0		$ 11.2	$ 17.5
Presque Isle \| Gaming Rights
Indefinite-lived Intangible Assets [Line Items]
Carrying value				$ 77.6
Fair value				62.6
Asset impairments				15.0
Presque Isle \| Trademarks
Indefinite-lived Intangible Assets [Line Items]
Asset impairments				2.5
Live and Historical Racing
Indefinite-lived Intangible Assets [Line Items]
Asset impairments		$ 11.2
Gaming \| Presque Isle \| Gaming Rights
Indefinite-lived Intangible Assets [Line Items]
Asset impairments				12.5
TwinSpires \| Presque Isle \| Gaming Rights
Indefinite-lived Intangible Assets [Line Items]
Asset impairments				$ 2.5