Leases - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($) Renewal_period
Blackstone Real Estate Income Trust [Member] | Bellagio [Member]
Leases [Line Items]
Initial annual rent	$ 245
Lease, initial annual rent, beginning period	Nov. 15, 2019
Lease, initial annual rent, ending period	Nov. 30, 2020
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%
MGP BREIT Venture [Member] | Mandalay Bay and MGM Grand Las Vegas [Member]
Leases [Line Items]
Initial annual rent	$ 292
Lease, initial annual rent, beginning period	Feb. 14, 2020
Lease, initial annual rent, ending period	Feb. 28, 2021
Lease agreement Initial lease term	30 years
Number of renewal periods, exercisable at option | Renewal_period	2
Lease agreement renewal period	10 years
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%
Percentage of expected lease term of economic useful life	75.00%
Percentage Of present value of future minimum lease payments	90.00%