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Summary of Significant Accounting Policies Equity Method Investments (Details) | Dec. 31, 2017
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Borgata |
Schedule of Equity Method Investments [Line Items] |
Ownership percentage by noncontrolling owners | 50.00%

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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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