Condensed Consolidated Statements of Equity / Capital (Parenthetical) - $ / shares	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Dividends (Distributions) declared per common share / unit	$ 0.25	$ 0.25	$ 0.25	$ 0.25	$ 0.50	$ 0.50
MPT Operating Partnership, L.P. [Member]
Dividends (Distributions) declared per common share / unit	0.25	0.25	0.25	0.25	$ 0.50	$ 0.50
MPT Operating Partnership, L.P. [Member] | General Partner [Member]
Dividends (Distributions) declared per common share / unit	0.25	0.25	0.25	0.25
Retained Earnings (Deficit) [Member]
Dividends (Distributions) declared per common share / unit	0.25	0.25	0.25	0.25
Common Par Value [Member] | MPT Operating Partnership, L.P. [Member] | Limited Partner [Member]
Dividends (Distributions) declared per common share / unit	$ 0.25	$ 0.25	$ 0.25	$ 0.25