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ORGANIZATION (Details)	9 Months Ended
	Sep. 30, 2024 segment resort
Organization Disclosure [Line Items]
Number of reportable segments | segment	3
BetMGM LLC
Organization Disclosure [Line Items]
Ownership interest (in percent)	50.00%
BetMGM LLC | Entain plc
Organization Disclosure [Line Items]
Ownership interest (in percent)	50.00%
Osaka IR KK | 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 | resort	2

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