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Investments in and Advances to Unconsolidated Affiliates - Schedule of Share of Income (Loss) From Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Income from unconsolidated affiliates | $ 35,111 | $ 20,635 | $ 92,870 | $ 48,030
City Center |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Income from unconsolidated affiliates | 40,747 | (6,041) | 128,127 | (24,489)
MGP BREIT Venture |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Income from unconsolidated affiliates | 38,959 | 38,976 | 116,876 | 97,787
BetMGM |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Income from unconsolidated affiliates | (49,060) | (9,057) | (154,275) | (24,976)
Other |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Income from unconsolidated affiliates | $ 4,465 | $ (3,243) | $ 2,142 | $ (292)

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- Definition This item represents the entity's proportionate share for the period of the operating income (loss) of its investees (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied, excluding pre-opening expenses. Such amount typically reflects adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment. + 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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