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v3.23.1

Leases - Ground Leases (Details) ft² in Millions, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 USD ($) ft² property lease | Mar. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items] |  |
Number of properties subject to ground leases | 242 |
Square feet subject to ground leases | ft² | 17.8 |
Number of prepaid ground leases | lease | 75 |
Amortization of prepaid rent | $ | $ 0.3 | $ 0.1
Number of non-prepaid ground leases | 167 |
Minimum |  |
Lessee, Lease, Description [Line Items] |  |
Ground lease, initial term | 40 years |
Maximum |  |
Lessee, Lease, Description [Line Items] |  |
Ground lease, initial term | 99 years |

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- Definition Amortization of Prepaid Rent + References No definition available. + Details
Name: | hr_AmortizationofPrepaidRent
Namespace Prefix: | hr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Number of Ground Leases, Excluding Prepaid Leases + References No definition available. + Details
Name: | hr_NumberofGroundLeasesExcludingPrepaidLeases
Namespace Prefix: | hr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Number of Ground Leases Prepaid + References No definition available. + Details
Name: | hr_NumberofGroundLeasesPrepaid
Namespace Prefix: | hr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Square Feet Subject to Ground Leases + References No definition available. + Details
Name: | hr_SquareFeetSubjecttoGroundLeases
Namespace Prefix: | hr_
Data Type: | dtr-types:areaItemType
Balance Type: | na
Period Type: | duration

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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 No definition available. + Details
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Term of lessee's operating lease, 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 -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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- Definition Number of separate real estate development properties located on land subject to ground leases. + References No definition available. + Details
Name: | us-gaap_NumberOfPropertiesSubjectToGroundLeases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |