Cost method investment ownership percentage.

No definition available.

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

- Definition

Favorable non-cash fair value adjustment on investment.

+ References

No definition available.

+ Details

Name:	mpw_FavorableNonCashFairValueAdjustmentOnInvestment
Namespace Prefix:	mpw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Unfavorable non-cash fair value adjustment on investment.

+ References

No definition available.

+ Details

Name:	mpw_UnfavorableNonCashFairValueAdjustmentOnInvestment
Namespace Prefix:	mpw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of dividend distribution from ordinary income and capital gain. Excludes distribution for tax return of capital.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 20
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=66023616&loc=d3e9079-115832

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 205
-Section 45
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118262037&loc=d3e9915-115836

+ Details

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

- Details

Name:	us-gaap_UnusualRiskOrUncertaintyByNatureAxis=mpw_COVID19PandemicMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_BusinessAcquisitionAxis=mpw_StewardHealthCareSystemLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Real Estate and Other Activities - Other Investment Activities - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Jan. 08, 2021
COVID-19 Pandemic [Member]
Business Acquisition [Line Items]
Unfavorable non-cash fair value adjustment on investment		$ 10.4
Aevis Victoria SA [Member]
Business Acquisition [Line Items]
Favorable non-cash fair value adjustment on investment	$ 4.1
Ownership interest in joint venture under the cost method	4.90%
Steward Health Care System LLC [Member]
Business Acquisition [Line Items]
Distribution on Steward equity investment	$ 11.0
Passive equity interest			9.90%