Fair Value - Schedule of Estimated Fair Values (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Carrying Amount
Financial assets:
Cash and cash equivalents	$ 270,321	$ 563,479
Carrying Amount \| Revolving Credit Facility
Financial liabilities:
Debt	267,832	142,453
Carrying Amount \| MGM Grand/Mandalay Bay CMBS Debt
Financial liabilities:
Debt	2,847,858	2,827,515
Carrying Amount \| Senior Unsecured Notes
Financial liabilities:
Debt	13,801,244	13,803,273
Fair Value
Financial assets:
Cash and cash equivalents	270,321	563,479
Fair Value \| Revolving Credit Facility
Financial liabilities:
Debt	267,832	142,453
Fair Value \| MGM Grand/Mandalay Bay CMBS Debt
Financial liabilities:
Debt	2,758,637	2,834,520
Fair Value \| Senior Unsecured Notes
Financial liabilities:
Debt	13,279,145	13,967,990
Investments in leases – financing receivables \| Carrying Amount
Financial assets:
Investments in leases, loans and securities	19,235,774	18,697,133
Investments in leases – financing receivables \| Fair Value
Financial assets:
Investments in leases, loans and securities	17,346,926	18,030,775
Investments in loans and securities \| Carrying Amount
Financial assets:
Investments in leases, loans and securities	2,984,010	2,525,457
Investments in loans and securities \| Fair Value
Financial assets:
Investments in leases, loans and securities	$ 2,975,688	$ 2,445,252