Earnings Per Share/Unit - Calculation of Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 33,107	$ (118,016)
Non-controlling interests' share in net income	(280)	(259)
Participating securities’ share in earnings	(461)	(117)
Net income (loss), less participating securities' share in earnings	$ 32,366	$ (118,392)
Basic weighted-average common shares	597,715	600,594
Dilutive potential common shares	0	0
Diluted weighted-average common shares	597,715	600,594
MPT Operating Partnership, L.P. [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 33,107	$ (118,016)
Non-controlling interests' share in net income	(280)	(259)
Participating securities’ share in earnings	(461)	(117)
Net income (loss), less participating securities' share in earnings	$ 32,366	$ (118,392)
Basic weighted-average common shares	597,715	600,594
Dilutive potential common shares	0	0
Diluted weighted-average common shares	597,715	600,594