Other Assets - Summary of Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other Assets [Abstract]
Debt issue costs, net	$ 35,324mpw_DebtIssueCostsNet	$ 27,180mpw_DebtIssueCostsNet
Other corporate assets	28,197mpw_OtherCorporateAssets	20,337mpw_OtherCorporateAssets
Prepaids and other assets	58,584us-gaap_PrepaidExpenseAndOtherAssets	20,356us-gaap_PrepaidExpenseAndOtherAssets
Total other assets	$ 122,105us-gaap_OtherAssets	$ 67,873us-gaap_OtherAssets

The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 10

-Article 7

Name:	us-gaap_OtherAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant