Debt - Covenants - Additional Information (Detail)	12 Months Ended
Dec. 31, 2014
Debt Disclosure [Abstract]
Percentage of dividends which could be paid from adjusted operating funds	95.00%
Percentage of dividends which could be paid from operation funds	95.00%
Maximum percentage of total unencumbered assets	150.00%

Percentage of dividends payable on basis of adjusted operating funds.

No definition available.

Name:	mpw_PercentageOfDividendsPayableOnBasisOfAdjustedOperatingFunds
Namespace Prefix:	mpw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration