Debt - Schedule of Outstanding Indebtedness (Details) $ in Thousands, £ in Millions, $ in Millions		3 Months Ended	6 Months Ended	12 Months Ended
	Feb. 08, 2022	Jun. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2024 CAD ($)	Jun. 30, 2024 GBP (£)	Mar. 18, 2024 USD ($)
Debt Instrument
Debt instrument, face amount		$ 17,118,975	$ 17,118,975	$ 17,123,804
Carrying Value		$ 16,727,361	$ 16,727,361	$ 16,724,125
Weighted average interest rate		4.362%	4.362%	4.351%	4.362%	4.362%
Unsecured Debt
Debt Instrument
Weighted average interest rate		4.51%	4.51%		4.51%	4.51%
Unsecured Debt | MGM Grand/Mandalay Bay CMBS Debt
Debt Instrument
Debt instrument, face amount		$ 3,000,000	$ 3,000,000	$ 3,000,000
Carrying Value		$ 2,786,550	$ 2,786,550	$ 2,773,758
Interest rate, stated percentage		3.558%	3.558%	3.56%	3.558%	3.558%
Unsecured Debt | 3.500% Notes
Debt Instrument
Debt instrument, face amount		$ 750,000	$ 750,000	$ 750,000
Carrying Value		$ 748,544	$ 748,544	$ 747,364
Interest rate, stated percentage		3.50%	3.50%	3.50%	3.50%	3.50%
Unsecured Debt | 4.375% Notes
Debt Instrument
Debt instrument, face amount		$ 500,000	$ 500,000	$ 500,000
Carrying Value		$ 498,641	$ 498,641	$ 497,864
Interest rate, stated percentage		4.375%	4.375%	4.375%	4.375%	4.375%
Unsecured Debt | 4.625% Notes
Debt Instrument
Debt instrument, face amount		$ 800,000	$ 800,000	$ 800,000
Carrying Value		$ 793,843	$ 793,843	$ 790,641
Interest rate, stated percentage		4.625%	4.625%	4.625%	4.625%	4.625%
Unsecured Debt | 4.500% Notes
Debt Instrument
Debt instrument, face amount		$ 500,000	$ 500,000	$ 500,000
Carrying Value		$ 489,020	$ 489,020	$ 486,520
Interest rate, stated percentage		4.50%	4.50%	4.50%	4.50%	4.50%
Unsecured Debt | 4.250% Notes
Debt Instrument
Debt instrument, face amount		$ 1,250,000	$ 1,250,000	$ 1,250,000
Carrying Value		$ 1,243,106	$ 1,243,106	$ 1,241,678
Interest rate, stated percentage		4.25%	4.25%	4.25%	4.25%	4.25%
Unsecured Debt | 5.750% Notes
Debt Instrument
Debt instrument, face amount		$ 750,000	$ 750,000	$ 750,000
Carrying Value		$ 755,693	$ 755,693	$ 756,800
Interest rate, stated percentage		5.75%	5.75%	5.75%	5.75%	5.75%
Unsecured Debt | 3.750% Notes
Debt Instrument
Debt instrument, face amount		$ 750,000	$ 750,000	$ 750,000
Carrying Value		$ 745,604	$ 745,604	$ 744,762
Interest rate, stated percentage		3.75%	3.75%	3.75%	3.75%	3.75%
Unsecured Debt | 4.500% Notes
Debt Instrument
Debt instrument, face amount		$ 350,000	$ 350,000	$ 350,000
Carrying Value		$ 340,950	$ 340,950	$ 339,689
Interest rate, stated percentage		4.50%	4.50%	4.50%	4.50%	4.50%
Unsecured Debt | 4.750% Notes
Debt Instrument
Debt instrument, face amount		$ 1,250,000	$ 1,250,000	$ 1,250,000
Carrying Value		$ 1,240,851	$ 1,240,851	$ 1,239,594
Interest rate, stated percentage		4.75%	4.75%	4.75%	4.75%	4.75%
Hedge adjusted interest rate			4.516%	4.516%
Unsecured Debt | 3.875% Notes
Debt Instrument
Debt instrument, face amount		$ 750,000	$ 750,000	$ 750,000
Carrying Value		$ 697,178	$ 697,178	$ 691,692
Interest rate, stated percentage		3.875%	3.875%	3.875%	3.875%	3.875%
Unsecured Debt | 4.625% Notes
Debt Instrument
Debt instrument, face amount		$ 1,000,000	$ 1,000,000	$ 1,000,000
Carrying Value		$ 991,332	$ 991,332	$ 990,531
Interest rate, stated percentage		4.625%	4.625%	4.625%	4.625%	4.625%
Unsecured Debt | 4.950% Notes
Debt Instrument
Debt instrument, face amount		$ 1,000,000	$ 1,000,000	$ 1,000,000
Carrying Value		$ 990,213	$ 990,213	$ 989,347
Interest rate, stated percentage		4.95%	4.95%	4.95%	4.95%	4.95%
Hedge adjusted interest rate			4.541%	4.541%
Unsecured Debt | 4.125% Notes
Debt Instrument
Debt instrument, face amount		$ 1,000,000	$ 1,000,000	$ 1,000,000
Carrying Value		$ 990,866	$ 990,866	$ 990,111
Interest rate, stated percentage		4.125%	4.125%	4.125%	4.125%	4.125%
Unsecured Debt | 5.125% Notes
Debt Instrument
Debt instrument, face amount		$ 1,500,000	$ 1,500,000	$ 1,500,000
Carrying Value		$ 1,483,855	$ 1,483,855	$ 1,482,836
Interest rate, stated percentage		5.125%	5.125%	5.125%	5.125%	5.125%
Hedge adjusted interest rate			3.98%	3.98%
Unsecured Debt | 5.750% Notes
Debt Instrument
Debt instrument, face amount		$ 550,000	$ 550,000				$ 550,000
Carrying Value		$ 540,698	$ 540,698
Interest rate, stated percentage		5.75%	5.75%		5.75%	5.75%	5.75%
Hedge adjusted interest rate			5.694%
Unsecured Debt | 5.625% Notes
Debt Instrument
Debt instrument, face amount		$ 750,000	$ 750,000	$ 750,000
Carrying Value		$ 736,101	$ 736,101	$ 735,854
Interest rate, stated percentage		5.625%	5.625%	5.625%	5.625%	5.625%
Unsecured Debt | 6.125% Notes
Debt Instrument
Debt instrument, face amount		$ 500,000	$ 500,000				$ 500,000
Carrying Value		$ 485,341	$ 485,341
Interest rate, stated percentage		6.125%	6.125%		6.125%	6.125%	6.125%
Unsecured Debt | 5.625% Notes
Debt Instrument
Debt instrument, face amount				$ 1,050,000
Carrying Value				$ 1,051,280
Interest rate, stated percentage				5.625%			5.625%
Senior Notes | Delayed Draw Term Loan | Minimum
Debt Instrument
Commitment fee percentage			0.15%
Senior Notes | Delayed Draw Term Loan | Maximum
Debt Instrument
Commitment fee percentage			0.375%
Revolving Credit Facility | Minimum
Debt Instrument
Basis spread on variable rate (percent)	0.775%		0.775%
Revolving Credit Facility | Maximum
Debt Instrument
Basis spread on variable rate (percent)	1.325%		1.325%
Revolving Credit Facility | Unsecured Debt
Debt Instrument
Debt instrument, face amount					$ 215.0	£ 9.0
Revolving Credit Facility | Senior Notes
Debt Instrument
Commitment fee percentage		0.21%	0.23%
Revolving Credit Facility | Senior Notes | Minimum
Debt Instrument
Commitment fee percentage			0.15%
Revolving Credit Facility | Senior Notes | Maximum
Debt Instrument
Commitment fee percentage			0.375%
Secured Overnight Financing Rate (SOFR)
Debt Instrument
Basis spread on variable rate (percent)	1.00%
Secured Overnight Financing Rate (SOFR) | Secured Debt
Debt Instrument
Basis spread on variable rate adjustment (percent)			0.10%
Canadian Overnight Repo Rate Average (CORRA)
Debt Instrument
Basis spread on variable rate (percent)	1.00%
Canadian Overnight Repo Rate Average (CORRA) | Loans Payable
Debt Instrument
Basis spread on variable rate adjustment (percent)			0.29547%
Canadian Overnight Repo Rate Average (CORRA) | Revolving Credit Facility | Minimum
Debt Instrument
Basis spread on variable rate (percent)	0.00%
Canadian Overnight Repo Rate Average (CORRA) | Revolving Credit Facility | Maximum
Debt Instrument
Basis spread on variable rate (percent)	0.325%
USD | Revolving Credit Facility | Unsecured Debt
Debt Instrument
Debt instrument, face amount		$ 0	$ 0	$ 0
Carrying Value		0	$ 0	$ 0
USD | Secured Overnight Financing Rate (SOFR) | Revolving Credit Facility | Unsecured Debt
Debt Instrument
Basis spread on variable rate (percent)			0.85%	1.05%
CAD | Revolving Credit Facility | Unsecured Debt
Debt Instrument
Debt instrument, face amount		157,595	$ 157,595	$ 162,346
Carrying Value		157,595	$ 157,595	$ 162,346
CAD | Canadian Overnight Repo Rate Average (CORRA) | Revolving Credit Facility | Unsecured Debt
Debt Instrument
Basis spread on variable rate (percent)			0.85%
CAD | Canadian Dollar Offered Rate (CDOR) | Revolving Credit Facility | Unsecured Debt
Debt Instrument
Basis spread on variable rate (percent)				1.05%
United Kingdom, Pounds | Revolving Credit Facility | Unsecured Debt
Debt Instrument
Debt instrument, face amount		11,380	$ 11,380	$ 11,458
Carrying Value		$ 11,380	$ 11,380	$ 11,458
United Kingdom, Pounds | Sterling Overnight Index Average (SONIA) | Revolving Credit Facility
Debt Instrument
Basis spread on variable rate (percent)				1.05%
United Kingdom, Pounds | Sterling Overnight Index Average (SONIA) | Revolving Credit Facility | Unsecured Debt
Debt Instrument
Basis spread on variable rate (percent)			0.85%