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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.

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

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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions		1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 20, 2005	Aug. 31, 2018	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2016
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Amortization expense related to intangible assets				$ 194	$ 192	$ 176
License [Member] \| Maryland [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Consideration paid for license fee							$ 22
Estimated useful life of intangible assets							15 years
License [Member] \| Massachusetts [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Consideration paid for license fee		$ 85
Estimated useful life of intangible assets		15 years
MGM Grand Paradise [Member] \| Extension Agreement [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Extended expiration date of agreement			Jun. 26, 2022
Contract extension premium paid			$ 25
Contract extension fee paid			$ 2
MGM Grand Paradise [Member] \| Gaming Sub-concession [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Estimated remaining useful life of gaming subconcession	15 years