Number of other partners

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- Definition

Number of partners shared remaining ownership percentage

+ References

No definition available.

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- Definition

Proceeds From Additional Issue Of Shares

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No definition available.

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- Definition

Purchase Period Of Shares For Underwriters

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- Definition

Sales Commission

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No definition available.

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- Definition

Underwriters Purchase Of Shares To Cover Over Allotments.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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 210.5-02.29)

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

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- Definition

Value of all classes of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares exclude common shares repurchased by the entity and held as treasury shares.

+ References

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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- Definition

Total units issued during the year due to the sale of units. All partners include general, limited and preferred partners.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

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- Definition

The cash inflow from the additional capital contribution to the entity.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

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Common Stock/Partner's Capital - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended		1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 14, 2015	Mar. 11, 2014	Jan. 31, 2014	Dec. 31, 2014
Class of Stock [Line Items]
Common stock, shares issued	207,731,000us-gaap_CommonStockSharesIssued					172,743,000us-gaap_CommonStockSharesIssued
Proceeds from sale of common shares/units, net of offering costs	$ 479,966,000	$ 112,583,000
MPT Operating Partnership, L.P. [Member]
Class of Stock [Line Items]
Proceeds from sale of common shares/units, net of offering costs	479,966,000	112,583,000
Ownership interest in equity	99.80%
Number of units sold	34,500,000	8,600,000
Number of other partners	3
Employee [Member]
Class of Stock [Line Items]
Number of partners shared remaining ownership percentage	2
Director [Member]
Class of Stock [Line Items]
Number of partners shared remaining ownership percentage	1
Public Offering [Member]
Class of Stock [Line Items]
Common stock, shares issued			34,500,000	7,700,000
Time granted to underwriters to purchase shares	30 days
Additional shares purchased by underwriters			4,500,000	1,200,000
Proceeds from sale of common shares/units, net of offering costs			480,000,000	100,200,000
Net proceeds from additional issuance of shares				16,000,000
Market Equity Offering Program [Member]
Class of Stock [Line Items]
Common stock, shares issued	0	900,000
Proceeds from sale of common shares/units, net of offering costs		12,300,000
Sales commission percentage					1.25%
Market Equity Offering Program [Member] \| IPO [Member]
Class of Stock [Line Items]
Public offering price for common stock per share		$ 13.21
Market Equity Offering Program [Member] \| Maximum [Member]
Class of Stock [Line Items]
Number of shares can be sold out					250,000,000