Document And Entity Information	3 Months Ended
	Mar. 31, 2012	May 04, 2012
Entity Registrant Name	MEDICAL PROPERTIES TRUST INC
Entity Central Index Key	0001287865
Document Type	10-Q
Document Period End Date	Mar. 31, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		135,572,700
MPT Operating Partnership, L.P. [Member]
Entity Registrant Name	MPT Operating Partnership, L.P.
Entity Central Index Key	0001524607
Document Type	10-Q
Document Period End Date	Mar. 31, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer