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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Weighted average interest rate of debt outstanding.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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No definition available.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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LONG-TERM DEBT - Additional Information (Details) $ in Millions		1 Months Ended	3 Months Ended
	May 01, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Apr. 30, 2024 USD ($)	Mar. 31, 2024 HKD ($)	Feb. 23, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Redemption of debt			$ 0	$ 1,250,000,000
Long-term debt, fair value			$ 6,200,000,000					$ 6,300,000,000
6.75% senior notes, due 2025
Debt Instrument [Line Items]
Long-term debt, interest rate (in percent)			6.75%			6.75%
Line of Credit \| Senior secured credit facility
Debt Instrument [Line Items]
Line of credit facility							$ 2,300,000,000
Line of credit facility drawn			$ 0
Line of Credit \| 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)			7.62%			7.62%
Line of Credit \| Unsecured Revolving Credit Facility \| MGM China second revolving credit facility
Debt Instrument [Line Items]
Line of credit facility			$ 587,000,000			$ 4,600
Line of credit facility drawn			0
Line of credit facility, current borrowing capacity			$ 748,000,000			$ 5,850
Senior Notes \| 6.5% Senior Notes, Due 2032 \| Subsequent Event
Debt Instrument [Line Items]
Long-term debt, principal amount					$ 750,000,000
Long-term debt, interest rate (in percent)					6.50%
Senior Notes \| 6.75% senior notes, due 2025 \| Subsequent Event
Debt Instrument [Line Items]
Long-term debt, interest rate (in percent)	6.75%
Senior Notes \| 6.75% senior notes, due 2025 \| Subsequent Event \| Scenario Forecast
Debt Instrument [Line Items]
Redemption of debt	$ 750,000,000
Senior Notes \| 6% Senior Notes, Due 2023
Debt Instrument [Line Items]
Long-term debt, interest rate (in percent)		6.00%		6.00%
Redemption of debt		$ 1,250,000,000