Earnings Per Share/Unit - Calculation of Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net (loss) income	$ (875,377)	$ 33,030
Non-controlling interests' share in earnings	(248)	(236)
Participating securities’ share in earnings	0	(515)
Net (loss) income, less participating securities' share in earnings	$ (875,625)	$ 32,279
Basic weighted-average common shares	600,304	598,302
Dilutive potential common shares	0	8
Diluted weighted-average common shares	600,304	598,310
MPT Operating Partnership, L.P. [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net (loss) income	$ (875,377)	$ 33,030
Non-controlling interests' share in earnings	(248)	(236)
Participating securities’ share in earnings	0	(515)
Net (loss) income, less participating securities' share in earnings	$ (875,625)	$ 32,279
Basic weighted-average common shares	600,304	598,302
Dilutive potential common shares	0	8
Diluted weighted-average common shares	600,304	598,310