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Commitment and Contingencies - Narrative (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 USD ($)
Commitments and Contingencies Disclosure [Abstract] |
Construction activity and development properties | $ 16.9

X
- Definition Construction Activity, Total Funding During the Period + References No definition available. + Details
Name: | hr_ConstructionActivityTotalFundingDuringthePeriod
Namespace Prefix: | hr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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