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Investments in and Advances to Unconsolidated Affiliates - Summarized Balance Sheet Information (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Schedule Of Equity Method Investments [Line Items] |  |
Cash and cash equivalents | $ 5,101,637 | $ 2,329,604
Property and equipment, net | 14,632,091 | 18,285,955
Long-term debt, net | 12,376,684 | 11,168,904
City Center and MGP BREIT Venture [Member] |  |
Schedule Of Equity Method Investments [Line Items] |  |
Cash and cash equivalents | 96,758 | 246,269
Property and equipment, net | 10,237,004 | 5,937,382
Other assets, net | 256,813 | 204,326
Long-term debt, net | 4,715,997 | 1,734,770
Other liabilities | $ 270,583 | $ 343,456

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