Earnings Per Share/Unit - Calculation of Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net loss	$ (77,450)	$ (98,068)	$ (118,016)	$ (800,929)	$ (319,659)	$ (875,377)	$ (293,534)	$ (1,995,965)
Non-controlling interests' share in net income	(280)			(234)			(828)	(1,458)
Participating securities’ share in earnings	(256)			(153)			(597)	(807)
Net loss, less participating securities' share in earnings	$ (77,986)			$ (801,316)			$ (294,959)	$ (1,998,230)
Basic weighted-average common shares	601,136			600,229			600,867	600,197
Dilutive potential common shares	0			0			0	0
Diluted weighted-average common shares	601,136			600,229			600,867	600,197
MPT Operating Partnership, L.P. [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net loss	$ (77,450)	$ (98,068)	$ (118,016)	$ (800,929)	$ (319,659)	$ (875,377)	$ (293,534)	$ (1,995,965)
Non-controlling interests' share in net income	(280)			(234)			(828)	(1,458)
Participating securities’ share in earnings	(256)			(153)			(597)	(807)
Net loss, less participating securities' share in earnings	$ (77,986)			$ (801,316)			$ (294,959)	$ (1,998,230)
Basic weighted-average common shares	601,136			600,229			600,867	600,197
Dilutive potential common shares	0			0			0	0
Diluted weighted-average common shares	601,136			600,229			600,867	600,197