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ORGANIZATION - Additional Information (Details)	12 Months Ended
	Dec. 31, 2023 property segment
Organization Disclosure [Line Items]
Number of reportable segments | segment	3
BetMGM
Organization Disclosure [Line Items]
Ownership interest (in percent)	50.00%
BetMGM | Entain plc
Organization Disclosure [Line Items]
Ownership interest (in percent)	50.00%
Japanese Joint Venture | JAPAN
Organization Disclosure [Line Items]
Ownership interest (in percent)	50.00%
MGM China
Organization Disclosure [Line Items]
Controlling interest (in percent)	56.00%
Number of integrated casino | property	2

X

- Definition

Number of integrated casino.

+ References

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+ Details

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Balance Type:	na
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- Definition

Organization disclosure.

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X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-18

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- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

+ References

No definition available.

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- Details

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