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Investment in and Advances to Unconsolidated Affiliates - Additional Information (Details) - USD ($) $ in Millions |  |  | 6 Months Ended
--- | --- | --- | ---
Mar. 06, 2019 | Mar. 05, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Investments in and Advances to Affiliates [Line Items] |  |  |  |
Proceeds from borrowings under long-term debt obligations |  |  | $ 726.1 | $ 1,235.3
Midwest Gaming Holdings, LLC |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |
Equity method investment, ownership percentage | 61.30% | 42.00% | 61.30% |
Aggregated cash consideration paid at closing of the Sale Transaction |  | $ 406.6 |  |
Transaction costs |  | 3.5 |  |
Deferred tax liability |  | 103.2 |  |
Equity method investment, difference between carrying amount and underlying equity |  |  | $ 833.8 |
Midwest Gaming Holdings, LLC |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |
Proceeds from borrowings under long-term debt obligations | $ 300.0 | $ 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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- Definition Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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