Represents the contract period for the right to use the intangible asset.

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- Definition

Reporting unit percentage of fair value less than carrying amount.

+ References

No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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-Name Accounting Standards Codification
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- Definition

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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- Definition

Percentage of fair value of reporting unit in excess of carrying amount.

+ References

No definition available.

+ Details

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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Apr. 20, 2005	Jan. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2015
Finite Lived Intangible Assets [Line Items]
Goodwill			$ 1,430,767	$ 2,897,110
Indefinite-lived intangible assets			327,120	330,221
Consideration paid for license fee				85,000	$ 21,600
Amortization expense related to intangible assets			$ 199,000	232,000	$ 243,000
MGM Grand Paradise, Gaming Subconcession [Member]
Finite Lived Intangible Assets [Line Items]
Estimated remaining useful life of gaming subconcession		25 years
License [Member] \| Maryland [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets			15 years
Consideration paid for license fee			$ 22,000
License [Member] \| Massachusetts [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets			15 years
Consideration paid for license fee			$ 85,000
Trademarks, License Rights and Other [Member]
Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets			229,022	232,123
Mandalay Resort Group Acquisition (2005) [Member] \| Trademarks, License Rights and Other [Member]
Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets			$ 210,000
MGM Grand Paradise SA [Member] \| MGM Grand Paradise, Gaming Subconcession [Member]
Finite Lived Intangible Assets [Line Items]
Period for the right to operate casino games of chance and other casino games	15 years
MGM China [Member]
Finite Lived Intangible Assets [Line Items]
Percentage of fair value in excess of carrying value						9.00%
Percentage of fair value less than its carrying value			4.00%
Non cash impairment charge			$ 1,467,991
Goodwill			$ 1,359,792	$ 2,826,135
MGM China [Member] \| MGM China, Customer Lists [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets			5 years
MGM China [Member] \| MGM China, Gaming Promoter Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets			4 years