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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