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Real Estate and Other Investments - Additional Information (Details) | 9 Months Ended
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Sep. 30, 2024 property jointVenture state
Real Estate |
Number of properties owned (property) | 368
Number of states in which properties are located | state | 36
Number of states | state | 5
Joint Venture |
Real Estate |
Number of unconsolidated joint ventures | jointVenture | 2
SHOP |
Real Estate |
Number of properties closed | 3
Held for sale |
Real Estate |
Number of properties owned (property) | 25

X
- Definition Number Of Real Estate Properties Closed + References No definition available. + Details
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X
- Definition Number Of States + References No definition available. + Details
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Namespace Prefix: | dhc_
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Balance Type: | na
Period Type: | duration

X
- Definition Number Of Unconsolidated Joint Ventures + References No definition available. + Details
Name: | dhc_NumberOfUnconsolidatedJointVentures
Namespace Prefix: | dhc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

X
- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
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X
- 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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X
- Details
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Namespace Prefix: |
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X
- Details
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X
- Details
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