Earnings Per Share/Unit - Calculation of Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2026	Jun. 30, 2026	Mar. 31, 2026	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2026	Sep. 30, 2025
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 202,077	$ (2,288)	$ 33,107	$ (77,450)	$ (98,068)	$ (118,016)	$ 232,896	$ (293,534)
Non-controlling interests' share in net income	(494)			(280)			(1,081)	(828)
Participating securities’ share in earnings	(353)			(256)			(1,221)	(597)
Net income (loss), less participating securities' share in earnings	$ 201,230			$ (77,986)			$ 230,594	$ (294,959)
Basic weighted-average common shares	597,157			601,136			597,611	600,867
Dilutive potential common shares	5			0			2	0
Diluted weighted-average common shares	597,162			601,136			597,613	600,867
MPT Operating Partnership, L.P. [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 202,077	$ (2,288)	$ 33,107	$ (77,450)	$ (98,068)	$ (118,016)	$ 232,896	$ (293,534)
Non-controlling interests' share in net income	(494)			(280)			(1,081)	(828)
Participating securities’ share in earnings	(353)			(256)			(1,221)	(597)
Net income (loss), less participating securities' share in earnings	$ 201,230			$ (77,986)			$ 230,594	$ (294,959)
Basic weighted-average common shares	597,157			601,136			597,611	600,867
Dilutive potential common shares	5			0			2	0
Diluted weighted-average common shares	597,162			601,136			597,613	600,867