XML 65 R51.htm IDEA: XBRL DOCUMENT v3.23.3

INCOME TAXES - Additional Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Income Tax Disclosure [Line Items]
Effective income tax rate provision (benefit)	5.50%	(10.60%)	18.90%	43.80%
MGM Grand Paradise SA | Macau
Income Tax Disclosure [Line Items]
Macau's complementary tax rate on distributions of gaming profits (in percent)					12.00%

X

- Definition

Complementary Tax Rate

+ References

No definition available.

+ Details

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

X

- Definition

Income Tax Disclosure [Line Items]

+ References

No definition available.

+ Details

Name:	mgm_IncomeTaxDisclosureLineItems
Namespace Prefix:	mgm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-12

+ Details

Name:	us-gaap_EffectiveIncomeTaxRateContinuingOperations
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=mgm_MGMGrandParadiseSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=country_MO
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: