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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) $ in Thousands, MOP$ in Millions	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Feb. 28, 2023 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2023 MOP (MOP$)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Investments in and advances to unconsolidated affiliates		$ 231,998		$ 231,998		$ 173,039
Percentage of ownership interest				100.00%
Fair value of investment		409,000		$ 409,000		461,000
Unrealized loss of equity investments		57,000	$ 20,000	52,000	$ 28,000
Loss reserve for accounts receivable		131,000		131,000		113,000
Accrual for property and equipment within accounts payable				56,000		80,000
MGM National Harbor
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Payments for repurchase of redeemable noncontrolling interest				138,000	21,000
Food and Beverage Revenue
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Lease revenue		20,000	19,000	57,000	52,000
Entertainment Retail and Other Revenue
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Lease revenue		27,000	$ 30,000	86,000	$ 85,000
Circus Circus Las Vegas And Adjacent Land
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Repayment of note receivable	$ 170,000
Circus Circus Las Vegas And Adjacent Land | Other Noncurrent Assets
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Carrying value of note receivable						167,000
MGM Grand Paradise SA | June 2022 Sub Concession Extension Contract
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Obligation amount		$ 87,000		$ 87,000		$ 124,000	MOP$ 700
Bellagio BREIT Venture
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of minority interest		5.00%		5.00%			5.00%
Bellagio Blackstone Real Estate Investment Trust, Inc
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Investments in and advances to unconsolidated affiliates		$ 55,000		$ 55,000

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