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Held for Sale - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) property	Dec. 31, 2022 property
Discontinued Operations and Disposal Groups [Abstract]
Number of properties classified as held for sale | property	1	1
Impairment charges on net real estate assets held for sale | $	$ 5.9

X

- Definition

Impairment Charge on Real Estate Assets Held for Sale

+ References

No definition available.

+ Details

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Namespace Prefix:	hr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Number of Properties Classified as Held for Sale

+ References

No definition available.

+ Details

Name:	hr_NumberOfPropertiesClassifiedAsHeldForSale
Namespace Prefix:	hr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration