Real Estate and Other Activities - Adeptus Health - Additional Information (Detail) - Adeptus Health [Member] $ in Millions	3 Months Ended	6 Months Ended
Mar. 31, 2020 USD ($)	Jun. 30, 2021 USD ($) Facility Lease
Business Acquisition [Line Items]
Number of leased properties \| Lease		60
Real estate impairment charge	$ 9.9
Number Of Facilities Transitioned \| Facility		13
Draw on letter of credit		$ 9.1
Maximum [Member]
Business Acquisition [Line Items]
Percentage of vacant on leased property		1.00%

Number of facilities transitioned.

No definition available.

Name:	mpw_NumberOfFacilitiesTransitioned
Namespace Prefix:	mpw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of leased properties.

+ References

No definition available.

+ Details

Name:	mpw_NumberOfLeasedProperties
Namespace Prefix:	mpw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of vacant on leased property.

+ References

No definition available.

+ Details

Name:	mpw_PercentageOfVacantOnLeasedProperty
Namespace Prefix:	mpw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

+ Details

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

- Definition

Amount of cash inflow from lease payment, classified as operating activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121561866&loc=SL77919320-209978

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=121561866&loc=SL77919327-209978

+ Details

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

- Details

Name:	srt_MajorCustomersAxis=mpw_AdeptusHealthMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: