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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (1,319,907)	$ 2,214,380	$ 583,894
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	27,762	28,870	(13,022)
Other comprehensive income (loss) related to cash flow hedges	(79,365)	(29,505)	3,576
Other comprehensive loss	(51,603)	(635)	(9,446)
Comprehensive income (loss)	(1,371,510)	2,213,745	574,448
Less: Comprehensive (income) loss attributable to noncontrolling interests	309,969	(168,447)	(112,622)
Comprehensive income (loss) attributable to MGM Resorts International	$ (1,061,541)	$ 2,045,298	$ 461,826

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