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Investments in and Advances to Unconsolidated Affiliates - Summary of Income Statement Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Net income (loss) | $ (601,971) | $ 6,104 | $ (863,939) | $ 148,430
CityCenter |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Net revenues | 126,673 | 320,352 | 394,989 | 993,215
Operating income (loss) | (29,254) | 61,464 | (100,491) | 159,831
Net income (loss) | $ (45,267) | $ 33,082 | $ (178,588) | $ 56,079

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