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v3.24.2.u1

Real Estate and Other Investments - Acquisitions and Dispositions Narrative (Details) $ in Thousands |  | 1 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 31, 2024 USD ($) | Aug. 01, 2024 USD ($) property | Mar. 31, 2024 USD ($) property | Jun. 30, 2024 USD ($) property
Real Estate |  |  |  |
Number of properties acquired |  |  |  | 0
Number of properties owned (property) |  |  |  | 370
Disposed of by sale |  |  |  |
Real Estate |  |  |  |
Number of properties owned (property) |  |  |  | 2
Sales price | $ |  |  |  | $ 7,800
Disposed of by sale | Subsequent Event |  |  |  |
Real Estate |  |  |  |
Number of properties owned (property) |  | 2 |  |
Sales price | $ |  | $ 21,275 |  |
Held for sale |  |  |  |
Real Estate |  |  |  |
Number of properties owned (property) |  |  |  | 5
Held for sale | Subsequent Event |  |  |  |
Real Estate |  |  |  |
Sales price | $ | $ 5,500 |  |  |
Medical Office |  |  |  |
Real Estate |  |  |  |
Number of properties owned (property) |  |  |  | 3
Medical Office | Arizona | Disposed of by sale |  |  |  |
Real Estate |  |  |  |
Number of properties owned (property) |  |  | 1 | 2
Sales price | $ |  |  | $ 3,600 | $ 7,800

X
- Definition Number Of Properties Acquired + References No definition available. + Details
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Namespace Prefix: | dhc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition This element represents the aggregate sales price excluding closing costs, of real estate properties sold by the entity. + References No definition available. + Details
Name: | dhc_RealEstateAggregateSalesPrice
Namespace Prefix: | dhc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- 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 976 -SubTopic 310 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477332/976-310-50-1 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=dhc_MedicalOfficeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementGeographicalAxis=stpr_AZ
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |