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Leases - Additional Information (Detail) $ in Millions		12 Months Ended
	Dec. 01, 2020 USD ($)	Dec. 31, 2020 USD ($) Renewal_period
Mandalay Bay and MGM Grand Las Vegas [Member] | MGP BREIT Venture [Member]
Leases [Line Items]
Initial annual rent		$ 292
Percentage of expected lease term of economic useful life		75.00%
Percentage Of present value of future minimum lease payments		90.00%
Lease agreement Initial lease term		30 years
Number of renewal periods, exercisable at option | Renewal_period		2
Lease agreement renewal period		10 years
Lease, Initial Annual Rent Beginning Period		Feb. 14, 2020
Lease, Initial Annual Rent Ending Period		Feb. 28, 2021
Annual rent escalator from year one through year fifteen		2.00%
Annual rent escalator after year fifteen		2.00%
Annual rent escalator cap after year fifteen		3.00%
MGM China [Member] | MGM Macau [Member]
Leases [Line Items]
Initial contract term ending year		25 years
Lease initial contract term ending period		2031-04
MGM China [Member] | MGM Cotai [Member]
Leases [Line Items]
Initial contract term ending year		25 years
Lease initial contract term ending period		2038-01
Las Vegas Strip Resorts [Member] | Bellagio BREIT Venture [Member] | Blackstone Real Estate Income Trust [Member]
Leases [Line Items]
Lease agreement Initial lease term		30 years
Lease agreement renewal period		10 years
Initial annual rent		$ 245
Annual rent escalator from year one through year ten		2.00%
Annual rent escalator from year eleven through year twenty		2.00%
Annual rent escalator cap from year eleven through year twenty		3.00%
Annual rent escalator after year twenty		4.00%
Percentage of expected lease term of economic useful life		75.00%
Percentage Of present value of future minimum lease payments		90.00%
Annual rent	$ 250

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- Definition

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- Definition

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- Definition

Annual rent escalator cap after year fifteen.

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- Definition

Annual rent escalator cap from year eleven through year twenty.

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- Definition

Annual rent escalator from year eleven through year twenty.

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- Definition

Annual rent escalator from year one through year fifteen.

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- Definition

Annual rent escalator from year one through year ten.

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- Definition

Initial annual rent.

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- Definition

Lease agreement initial lease term.

+ References

No definition available.

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- Definition

Lease agreement renewal period.

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No definition available.

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- Definition

Lease, initial annual rent, beginning period.

+ References

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- Definition

Lease, initial annual rent, ending period.

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- Definition

Lease initial contract term ending period.

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- Definition

Lease initial contract term ending year.

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Leases.

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Number of renewal periods, exercisable at option.

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- Definition

Percentage of expected lease term of economic useful life.

+ References

No definition available.

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- Definition

Percentage of present value of future minimum lease payments.

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980

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- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980

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