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Summary of Significant Accounting Policies - Variable interest entity (Details) $ in Thousands | Mar. 31, 2023 USD ($) property
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Variable Interest Entity [Line Items] |
Number of owned real estate properties | property | 681
Houston, TX | Variable Interest Entity, Not Primary Beneficiary |
Variable Interest Entity [Line Items] |
Notes receivable, carrying amount | $ 30,839
Maximum exposure to loss | 31,150
Charlotte, NC | Variable Interest Entity, Not Primary Beneficiary |
Variable Interest Entity [Line Items] |
Notes receivable, carrying amount | 5,639
Maximum exposure to loss | 6,000
Texas | Variable Interest Entity, Not Primary Beneficiary |
Variable Interest Entity [Line Items] |
Joint venture, carrying amount | 66,038
Maximum exposure to loss | $ 66,038
Number of owned real estate properties | property | 7

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- Definition Joint Venture, Carrying Amount + References No definition available. + Details
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Namespace Prefix: | hr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Notes Receivable, Carrying Amount + References No definition available. + Details
Name: | hr_NotesReceivableCarryingAmount
Namespace Prefix: | hr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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- Definition The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=123419778&loc=d3e5747-111685 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph b -URI https://asc.fasb.org/extlink&oid=123419778&loc=d3e5728-111685 + Details
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Balance Type: | credit
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 No definition available. + Details
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Balance Type: | na
Period Type: | duration

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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: |

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

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- Details
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