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Investment In and Advances to Unconsolidated Affiliates - Additional Information (Details) $ in Millions |  |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 06, 2019 USD ($) | Mar. 05, 2019 USD ($) | Dec. 31, 2019 USD ($) joint_venture | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Mar. 04, 2019 USD ($) | Aug. 31, 2018 | Aug. 30, 2018 | Jul. 16, 2018 | Jan. 01, 2017
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Number of immaterial joint ventures | joint_venture |  |  | 2 |  |  |  |  |  |  |
Distributions from unconsolidated affiliates |  |  | $ 38.1 | $ 19.8 | $ 18.0 |  |  |  |  |
Deferred tax liability |  |  | 212.8 | 78.2 |  |  |  |  |  |
Other assets, net |  |  | 240.1 | 106.7 |  |  |  |  |  |
Property and equipment, net |  |  | $ 256.1 | $ 95.7 |  |  |  |  |  |
Miami Valley Gaming LLC |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  | 50.00% |  |  |  |  |  |  |
Midwest Gaming Holdings, LLC |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  | 42.00% | 61.30% |  |  |  |  |  |  |
Aggregated cash consideration paid at closing of the Sale Transaction |  | $ 406.6 |  |  |  |  |  |  |  |
Deferred tax liability |  | 103.2 |  |  |  | $ 103.2 |  |  |  |
Carrying value of equity method investment |  | 835.0 | $ 834.2 |  |  |  |  |  |  |
Other assets, net |  | 853.7 |  |  |  |  |  |  |  |
Midwest Gaming Holdings, LLC | Grandstands and buildings |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Property and equipment, net |  | (9.5) |  |  |  |  |  |  |  |
Property, plant, and equipment, useful life |  |  | 35 years 3 months 18 days |  |  |  |  |  |  |
Midwest Gaming Holdings, LLC | Land |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Property and equipment, net |  | (13.7) |  |  |  |  |  |  |  |
Midwest Gaming Holdings, LLC | Personal property |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Carrying value of equity method investment |  |  |  |  |  | $ 4.5 |  |  |  |
Property, plant, and equipment, useful life |  |  | 3 years 8 months 12 days |  |  |  |  |  |  |
Clairvest Group Inc. |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Transaction costs and working capital adjustments |  | 3.5 |  |  |  |  |  |  |  |
Ocean Downs |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  | 100.00% | 50.00% | 50.00% | 50.00%
Saratoga Casino Holdings LLC |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  | 25.00% |  | 25.00% |
Delaware North Companies Gaming & Entertainment Inc. | Miami Valley Gaming LLC |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  | 50.00% |  |  |  |  |  |  |
Midwest Gaming Holdings, LLC |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from new credit facilities | $ 300.0 | $ 300.0 |  |  |  |  |  |  |  |
High Plaines | Midwest Gaming Holdings, LLC |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  | 36.00% |  |  |  |  |  |  |
Midwest Gaming and Casino Investors | Midwest Gaming Holdings, LLC |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  | 2.70% |  |  |  |  |  |  |

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