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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) MOP$ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 MOP (MOP$)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Investments in and advances to unconsolidated affiliates		$ 240,803,000	$ 173,039,000
Ownership interest (in percent)		100.00%
Fair value of equity investments		$ 435,000,000	461,000,000
Gain (loss) on equity investments		(26,000,000)	10,000,000	$ 28,000,000
Impairment charges		0	0	0
Accrual for property and equipment within accounts payable		84,000,000	80,000,000
Advertising expense		299,000,000	235,000,000	121,000,000
MGM National Harbor
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Payments for repurchase of redeemable noncontrolling interest		138,000,000	21,000,000	1,000,000
Food and Beverage Revenue
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Lease revenue		78,000,000	72,000,000	43,000,000
Entertainment Retail and Other Revenue
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Lease revenue		114,000,000	118,000,000	$ 85,000,000
June 2022 Sub Concession Extension Contract | MGM Grand Paradise SA
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Pledged cash		$ 87,000,000	124,000,000		MOP$ 700
Circus Circus Las Vegas and Adjacent Land
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Repayment of note receivable	$ 170,000,000
Circus Circus Las Vegas and Adjacent Land | Other Assets, Net
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Carrying value of note receivable			$ 167,000,000
Accounts Receivable | Credit Concentration Risk | Casino
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Gross casino accounts receivable (in percent)		54.00%	52.00%

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