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Leases - Additional Information (Detail) $ in Millions			12 Months Ended
	Dec. 01, 2021 USD ($)	Mar. 01, 2021 USD ($)	Dec. 31, 2021 USD ($) renewal_period agreement
Affiliated Entity | Aria and Vdara
Leases [Line Items]
Number of renewal periods, exercisable at option | agreement			3
Lease agreement Initial lease term			30 years
Lease agreement renewal period			10 years
Annual rent escalator after year fifteen			2.00%
Annual rent escalator cap after year fifteen			3.00%
Fixed rent escalator for fifteen years			2.00%
Lessee, operating lease, annual rent expense			$ 215
Mandalay Bay and MGM Grand Las Vegas | MGP BREIT Venture
Leases [Line Items]
Number of renewal periods, exercisable at option | renewal_period			2
Lease agreement Initial lease term			30 years
Lease agreement renewal period			10 years
Annual rent escalator from year one through year fifteen		2.00%	2.00%
Annual rent escalator after year fifteen			2.00%
Annual rent escalator cap after year fifteen			3.00%
Lessee, operating lease, annual rent expense		$ 298
MGM China | MGM Macau
Leases [Line Items]
Initial contract term ending year			25 years
MGM China | MGM Cotai
Leases [Line Items]
Initial contract term ending year			25 years
Las Vegas Strip Resorts | Bellagio BREIT Venture | Blackstone Real Estate Income Trust
Leases [Line Items]
Lessor, operating lease, renewal term			10 years
Lease agreement Initial lease term			30 years
Number of renewal periods, exercisable at option | agreement			2
Lease agreement renewal period			10 years
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%
Lessee, operating lease, annual rent expense	$ 255

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- Definition

Annual rent escalator after year fifteen.

+ References

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- Definition

Annual rent escalator after year twenty.

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- Definition

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+ References

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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

Fixed rent escalator for fifteen years

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- Definition

Lease agreement initial lease term.

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No definition available.

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- Definition

Lease agreement renewal period.

+ References

No definition available.

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- Definition

Lease initial contract term ending year.

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Leases.

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Lessee, Operating Lease, Annual Rent Expense

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- Definition

Number of renewal periods, exercisable at option.

+ References

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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=123408670&loc=SL77918673-209980

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- Definition

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+ 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=123408670&loc=SL77918673-209980

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919359-209981

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