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ACQUISITIONS AND DIVESTITURES - Schedule of Pro Forma Financial Information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract] |  |
Net revenues | $ 13,550,304 | $ 11,114,592
Net income attributable to MGM Resorts International | $ 1,487,247 | $ 185,703

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