Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	391,839,000	370,637,000
Common stock, shares outstanding	391,839,000	370,637,000
General Partner [Member] \| MPT Operating Partnership, L.P. [Member]
General partner, units issued	3,918,000	3,706,000
General partner, units outstanding	3,918,000	3,706,000
Common Units [Member] \| MPT Operating Partnership, L.P. [Member]
Limited Partners, units issued	387,921,000	366,931,000
Limited Partners, units outstanding	387,921,000	366,931,000
LTIP Units [Member] \| MPT Operating Partnership, L.P. [Member]
LTIP Units, shares issued	232,000	232,000
LTIP Units, shares outstanding	232,000	232,000

Face amount or stated value per share of common stock.

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