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ORGANIZATION (Details)	3 Months Ended
	Mar. 31, 2025 segment resort
Organization Disclosure [Line Items]
Number of reportable segments | segment	4
BetMGM LLC
Organization Disclosure [Line Items]
Ownership interest (as a percent)	50.00%
BetMGM LLC | Entain plc
Organization Disclosure [Line Items]
Ownership interest (as a percent)	50.00%
Osaka IR KK | Japan
Organization Disclosure [Line Items]
Ownership interest (as a percent)	50.00%
MGM China
Organization Disclosure [Line Items]
Controlling interest (as a percent)	56.00%
Number of integrated casino | resort	2

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