Real Estate and Other Activities - Leasing Operations (Lessor) - Additional Information (Detail) $ in Millions	12 Months Ended
Dec. 31, 2025 USD ($) Lease
Lessor Lease Description [Line Items]
Lease renewal term	5 years
Annual rent escalations	99.00%
Minimum [Member]
Lessor Lease Description [Line Items]
Term of lease	15 years
NOR Healthcare Systems Corporation [Member]
Lessor Lease Description [Line Items]
Net book value of property \| $	$ 510
Number of operating leases \| Lease	6

Leases annual rent escalations percentage.

No definition available.

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Namespace Prefix:	mpt_
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Balance Type:	na
Period Type:	duration

- Definition

Net book value of property.

+ References

No definition available.

+ Details

Name:	mpt_NetBookValueOfProperty
Namespace Prefix:	mpt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of operating leases.

+ References

No definition available.

+ Details

Name:	mpt_NumberOfOperatingLeases
Namespace Prefix:	mpt_
Data Type:	xbrli:integerItemType
Balance Type:	na
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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-3

+ Details

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

- Definition

Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

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

- Details

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