Debt - Senior Unsecured Debt (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)	Apr. 07, 2025 USD ($)	Dec. 19, 2024 USD ($)	Mar. 18, 2024 USD ($)	Apr. 29, 2022 USD ($)	Feb. 05, 2020 USD ($)	Nov. 26, 2019 USD ($)
Debt Instrument
Principal Amount	$ 17,218,422
Senior Unsecured Notes
Debt Instrument
Principal Amount		$ 17,092,453
Redemption price, percentage (equal to)	100.00%
November 2019 Notes Senior Unsecured Notes | Senior Unsecured Notes
Debt Instrument
Principal Amount								$ 2,250,000
February 2020 Notes Senior Unsecured Notes | Senior Unsecured Notes
Debt Instrument
Principal Amount							$ 1,750,000
Senior Unsecured April 2022 Notes | Senior Unsecured Notes
Debt Instrument
Principal Amount						$ 4,500,000
Exchange Notes | Senior Unsecured Notes
Debt Instrument
Principal Amount						2,300,000
MGP OP Notes | Senior Unsecured Notes
Debt Instrument
Principal Amount						$ 63,600
Senior Unsecured April 2022, March 2024, December 2024 and April 2025 Notes
Debt Instrument
Ratio of unencumbered assets to unsecured indebtedness	1.50
March 2024 Senior Notes | Senior Unsecured Notes
Debt Instrument
Principal Amount					$ 1,050,000
December 2024 Notes | Senior Unsecured Notes
Debt Instrument
Principal Amount				$ 750,000
April 2025 Notes | Senior Unsecured Notes
Debt Instrument
Principal Amount			$ 1,300,000