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Basis of Presentation and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of Estimated Useful Lives of Property and Equipment

Property and equipment are generally depreciated over the following estimated useful lives on a straight-line basis:

Buildings and improvements		15 to 40 years
Land improvements		10 to 20 years
Furniture and fixtures		3 to 20 years
Equipment		3 to 15 years

Schedule of Contract and Contract - Related Liabilities

The following table summarizes the activity related to contract and contract-related liabilities:

	Outstanding Chip Liability								Loyalty Program								Customer Advances and Other
	2020				2019				2020				2019				2020				2019
	(in thousands)
Balance at January 1	$	314,570			$	323,811			$	126,966			$	113,293			$	481,095			$	667,285
Balance at December 31		212,671				314,570				139,756				126,966				382,287				481,095
Increase / (decrease)	$	(101,899	)		$	(9,241	)		$	12,790			$	13,673			$	(98,808	)		$	(186,190	)

Schedule of Diluted Weighted-Average Number of Common and Common Equivalent Shares Adjustments for Potential Dilution of Share-Based Awards Outstanding

Diluted weighted average common and common equivalent shares include adjustments for potential dilution of share-based awards outstanding under the Company’s stock compensation plan.

		Year Ended December 31,
		2020				2019				2018
Numerator:		(In thousands)
Net income (loss) attributable to MGM Resorts International		$	(1,032,724	)		$	2,049,146			$	466,772
Adjustment related to redeemable noncontrolling interests			35,520				(2,713	)			(21,326	)
Net income (loss) available to common stockholders - basic			(997,204	)			2,046,433				445,446
Other			—				(194	)			(206	)
Net income (loss) attributable to common stockholders - diluted		$	(997,204	)		$	2,046,239			$	445,240
Denominator:
Weighted average common shares outstanding basic			494,152				524,173				544,253
Potential dilution from share-based awards			—				3,472				5,283
Weighted average common and common equivalent shares - diluted			494,152				527,645				549,536
Antidilutive share-based awards excluded from the calculation of diluted earnings per share			9,493				1,617				2,668

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- Definition

Tabular disclosure of the useful life and of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

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- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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