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INVESTMENTS IN AND ADVANCES TO UNCONSOLIDATED AFFILIATES - Schedule of Share of Income (Loss) From Unconsolidated Affiliates (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Schedule Of Equity Method Investments [Line Items] |  |  |
Income (loss) from unconsolidated affiliates | $ (62,104) | $ (160,213) | $ 84,823
CityCenter (through September 26, 2021) |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |
Income (loss) from unconsolidated affiliates | 0 | 0 | 128,127
MGP BREIT Venture (through April 29, 2022) |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |
Income (loss) from unconsolidated affiliates | 0 | 51,051 | 155,817
BetMGM |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |
Income (loss) from unconsolidated affiliates | (90,894) | (234,464) | (211,182)
Other |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |
Income (loss) from unconsolidated affiliates | $ 28,790 | $ 23,200 | $ 12,061

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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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