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LONG-TERM DEBT - Additional Information (Detail) $ in Millions		1 Months Ended	6 Months Ended
	Mar. 01, 2023 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 HKD ($)	Mar. 31, 2023	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Redemption of debt			$ 1,250,000,000	$ 1,000,000,000
Long-term debt, fair value			$ 6,500,000,000				$ 8,400,000,000
6% senior notes, due 2023
Debt Instrument [Line Items]
Redemption of debt	$ 1,250,000,000
Long-term debt, interest rate (in percent)			6.00%		6.00%	6.00%
7.75% senior notes, due 2022
Debt Instrument [Line Items]
Redemption of debt		$ 1,000,000,000
Long-term debt, interest rate (in percent)		7.75%
Revolving Credit Facility | Senior Credit Facility
Debt Instrument [Line Items]
Line of credit facility			$ 1,675,000,000
Line of credit facility drawn			0
Term Loan | MGM China first revolving credit facility
Debt Instrument [Line Items]
Line of credit facility			$ 1,200,000,000		$ 9,750
Debt instrument, weighted average interest rate (in percent)			7.83%		7.83%
Unsecured Revolving Credit Facility | MGM China second revolving credit facility
Debt Instrument [Line Items]
Line of credit facility			$ 398,000,000		$ 3,120
Line of credit facility drawn			0
Line of credit facility, current borrowing capacity			$ 747,000,000		$ 5,850

X

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Contractual interest rate for funds borrowed, under the debt agreement.

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