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Acquisitions - Summary of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Jan. 11, 2019 | Dec. 31, 2018 | Aug. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |
Goodwill | $ 367.1 |  | $ 338.0 |  | $ 317.6
Saratoga New York And Saratoga Colorado |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Current assets |  |  |  | $ 1.9 |
Property and equipment |  |  |  | 57.4 |
Goodwill |  |  |  | 20.4 |
Intangible assets |  |  |  | 95.4 |
Current liabilities |  |  |  | (5.2) |
Debt |  |  |  | (54.7) |
Assets acquired and liabilities assumed |  |  |  | $ 115.2 |
Presque Isle |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Current assets |  | $ 2.1 |  |  |
Property and equipment |  | 78.5 |  |  |
Goodwill |  | 26.1 |  |  |
Intangible assets |  | 71.2 |  |  |
Current liabilities |  | (5.2) |  |  |
Non-current liabilities |  | (0.6) |  |  |
Assets acquired and liabilities assumed |  | $ 172.1 |  |  |

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