Annual rent escalator after year fifteen.

No definition available.

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- Definition

Annual rent escalator after year ten.

+ References

No definition available.

+ Details

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- Definition

Annual rent escalator after year twenty.

+ References

No definition available.

+ Details

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- Definition

Annual rent escalator cap after year fifteen.

+ References

No definition available.

+ Details

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- Definition

Annual rent escalator cap after year ten.

+ References

No definition available.

+ Details

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- Definition

Annual rent escalator cap from year eleven through year twenty.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Annual rent escalator from year eleven through year twenty.

+ References

No definition available.

+ Details

Name:	mgm_AnnualRentEscalatorFromYearElevenThroughYearTwenty
Namespace Prefix:	mgm_
Data Type:	dtr-types:percentItemType
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Period Type:	duration

- Definition

Annual rent escalator from year one through year fifteen.

+ References

No definition available.

+ Details

Name:	mgm_AnnualRentEscalatorFromYearOneThroughYearFifteen
Namespace Prefix:	mgm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Annual rent escalator from year one through year ten.

+ References

No definition available.

+ Details

Name:	mgm_AnnualRentEscalatorFromYearOneThroughYearTen
Namespace Prefix:	mgm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Decrease in annual rent payment.

+ References

No definition available.

+ Details

Name:	mgm_DisposalGroupDecreaseInAnnualRentPayment
Namespace Prefix:	mgm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Fixed Rent Escalator for Fifteen Years

+ References

No definition available.

+ Details

Name:	mgm_FixedRentEscalatorForFifteenYears
Namespace Prefix:	mgm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Lease agreement renewal period.

+ References

No definition available.

+ Details

Name:	mgm_LeaseAgreementRenewalPeriod
Namespace Prefix:	mgm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Lease Liabilities Derecognized Upon Lease Modification

+ References

No definition available.

+ Details

Name:	mgm_LeaseLiabilitiesDerecognizedUponLeaseModification
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Lessee, Operating Lease, Annual Rent Expense

+ References

No definition available.

+ Details

Name:	mgm_LesseeOperatingLeaseAnnualRentExpense
Namespace Prefix:	mgm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Lessee, Operating Lease, Lease Covenants, Letters Of Credit, Amount, Period Of Rent Payments

+ References

No definition available.

+ Details

Name:	mgm_LesseeOperatingLeaseLeaseCovenantsLettersOfCreditAmountPeriodOfRentPayments
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Lessee, Operating Lease, Lease Covenants, Number of Debt Instruments, Letters of Credit

+ References

No definition available.

+ Details

Name:	mgm_LesseeOperatingLeaseLeaseCovenantsNumberOfDebtInstrumentsLettersOfCredit
Namespace Prefix:	mgm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Lessee, Operating Lease, Right Of Use Assets Derecognized Upon Lease Modification

+ References

No definition available.

+ Details

Name:	mgm_LesseeOperatingLeaseRightOfUseAssetsDerecognizedUponLeaseModification
Namespace Prefix:	mgm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Master Lease, Increase (Decrease) In Annual Cash Rent

+ References

No definition available.

+ Details

Name:	mgm_MasterLeaseIncreaseDecreaseInAnnualCashRent
Namespace Prefix:	mgm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of renewal periods, exercisable at option.

+ References

No definition available.

+ Details

Name:	mgm_NumberOfRenewalPeriodsExercisableAtOption
Namespace Prefix:	mgm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

Name:	us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- 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

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessor'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
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-3

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
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- Details

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- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsDisposedOfBySaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_OwnershipAxis=mgm_BellagioBREITVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Period Type:

- Details

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- Details

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- Details

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- Details

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LEASES - Additional Information (Details) $ in Thousands												1 Months Ended	12 Months Ended
LEASES - Additional Information (Details) $ in Thousands	Dec. 01, 2025 USD ($)	Oct. 01, 2025 USD ($)	Jun. 01, 2025 USD ($)	May 01, 2025 USD ($)	Mar. 01, 2025 USD ($)	Feb. 15, 2023 USD ($)	May 17, 2022 period	Apr. 29, 2022 period	Sep. 28, 2021 period	Feb. 14, 2020 period	Nov. 15, 2019 period	Feb. 28, 2023 USD ($)	Dec. 31, 2025 debt_instrument
Lessee, Lease, Description [Line Items]
Number of letters of credit \| debt_instrument													1
Disposal Group, Held-for-Sale, Not Discontinued Operations \| Gold Strike Tunica
Lessee, Lease, Description [Line Items]
Decrease in annual rent payment						$ 40,000						$ 40,000
Discontinued Operations, Disposed of by Sale \| Gold Strike Tunica
Lessee, Lease, Description [Line Items]
Right-of-use assets derecognized upon lease modification												507,000
Lease liabilities derecognized upon lease modification												$ 516,000
Bellagio BREIT Venture
Lessee, Lease, Description [Line Items]
Ownership interest by noncontrolling owner													5.00%
VICI Lease and Ground Subleases
Lessee, Lease, Description [Line Items]
Lease agreement, initial lease term (in years)								25 years
Number of renewal periods, exercisable at option \| period								3
Annual rent escalator from year one through year ten								2.00%
Lease agreement renewal period								10 years
Lease agreement renewal period								10 years
Annual rent escalator from year one through year fifteen				2.00%
Annual rent escalator after year ten								2.00%
Annual rent escalator cap after year ten								3.00%
Lessee, operating lease, annual rent expense				$ 775,000
Bellagio Lease
Lessee, Lease, Description [Line Items]
Lease agreement, initial lease term (in years)											30 years
Number of renewal periods, exercisable at option \| period											2
Lease agreement renewal period (in years)											10 years
Annual rent escalator from year one through year ten	2.00%										2.00%
Lease agreement renewal period											10 years
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%
Increase (decrease) in annual rent expense	$ 276,000
Mandalay Bay and MGM Grand Las Vegas
Lessee, Lease, Description [Line Items]
Lease agreement, initial lease term (in years)										30 years
Number of renewal periods, exercisable at option \| period										2
Lease agreement renewal period										15 years
Increase (decrease) in annual rent expense					$ 322,000
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%
Aria and Vdara
Lessee, Lease, Description [Line Items]
Lease agreement, initial lease term (in years)									30 years
Number of renewal periods, exercisable at option \| period									3
Lease agreement renewal period									15 years
Increase (decrease) in annual rent expense		$ 233,000
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%							2.00%
Cosmopolitan of Las Vegas
Lessee, Lease, Description [Line Items]
Lease agreement, initial lease term (in years)							30 years
Number of renewal periods, exercisable at option \| period							3
Lease agreement renewal period							15 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			$ 212,000
M G M Cotai
Lessee, Lease, Description [Line Items]
Lease agreement, initial lease term (in years)													25 years
Lease agreement renewal period													10 years
MGM Macau
Lessee, Lease, Description [Line Items]
Lease agreement, initial lease term (in years)													25 years
Lease agreement renewal period													10 years
Minimum \| VICI Lease and Ground Subleases
Lessee, Lease, Description [Line Items]
Term of covenant													6 months
Maximum \| VICI Lease and Ground Subleases
Lessee, Lease, Description [Line Items]
Term of covenant													2 years