Leases - Schedule of Components of Lease Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Line Items]
Operating lease cost, primarily classified within "General and administrative"	$ 870,779	$ 751,002	$ 143,954
Interest expense	2,354	(21,320)	1,164
Amortization expense	73,475	70,476	13,341
Total finance lease costs	75,829	49,156	14,505
Bellagio BREIT Venture
Leases [Line Items]
Operating lease cost, primarily classified within "General and administrative"	331,000	331,000	42,000
Mandalay Bay and MGM Grand Las Vegas
Leases [Line Items]
Operating lease cost, primarily classified within "General and administrative"	$ 395,000	$ 347,000	$ 0