Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] $ in Millions	Oct. 30, 2015 USD ($)
Subsequent Event [Line Items]
Acquisition costs	$ 25.8
Term of lease, years	15 years
Term of lease extension, years	5 years
Increase in consumer price-index, floor rate	2.00%
Increase in consumer price-index, ceiling rate	4.00%
Merger consideration in the form of acquisition loan	$ 9.2

Lease agreement increase in consumer price index ceiling rate.

No definition available.

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

- Definition

Lease agreement increase in consumer price index floor rate.

+ References

No definition available.

+ Details

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

- Definition

Lease extension period.

+ References

No definition available.

+ Details

Name:	mpw_LeaseExtensionPeriod
Namespace Prefix:	mpw_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Lease period.

+ References

No definition available.

+ Details

Name:	mpw_LeasePeriod
Namespace Prefix:	mpw_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Merger consideration provided as acquisition loan.

+ References

No definition available.

+ Details

Name:	mpw_MergerConsiderationProvidedAsAcquisitionLoan
Namespace Prefix:	mpw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-10.(c)(7)(ii))

-URI http://asc.fasb.org/extlink&oid=50486907&loc=d3e511914-122862

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 10

-Paragraph c

-Subparagraph 3(ii)(A)

-Article 4

+ Details

Name:	us-gaap_AcquisitionCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: