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Investment in and Advances to Unconsolidated Affiliates - Additional Information (Details) - USD ($) $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Mar. 04, 2019 | Mar. 31, 2019 | Mar. 31, 2018 | Oct. 31, 2018
Investments in and Advances to Affiliates [Line Items] |  |  |  |
Proceeds from borrowings under long-term debt obligations |  | $ 1,231.9 | $ 100.9 |
Midwest Gaming Holdings, LLC |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |
Equity method investment, ownership percentage | 42.00% | 61.30% |  | 100.00%
Aggregated cash consideration paid at closing of the Sale Transaction | $ 406.6 |  |  |
Clairvest Group Inc. |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |
Aggregated cash consideration paid at closing of the Sale Transaction | 409.8 |  |  |
Transaction costs | 3.2 |  |  |
Deferred tax liability | 109.6 |  |  |
Midwest Gaming Holdings, LLC |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |
Proceeds from borrowings under long-term debt obligations | $ 300.0 |  |  |
High Plaines | Midwest Gaming Holdings, LLC |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |
Equity method investment, ownership percentage |  | 36.00% |  |
Casino Investors | Midwest Gaming Holdings, LLC |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |
Equity method investment, ownership percentage |  | 2.70% |  |

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