Stockholders' Equity - Schedule of Unrecognized Compensation Cost, Nonvested Awards (Details) $ in Millions	Jun. 30, 2026 USD ($)
Equity [Abstract]
2026 (remaining)	$ 9.1
2027	16.2
2028	9.9
2029	1.8
2030 and thereafter	0.4
Total	$ 37.4

Employee Service Share-based Compensation, Non Vested Awards, Compensation Cost Not yet Recognized, After Year Four

No definition available.

Name:	hr_EmployeeServiceShareBasedCompensationNonVestedAwardsCompensationCostNotYetRecognizedAfterYearFour
Namespace Prefix:	hr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Employee Service Share-based Compensation, Non Vested Awards, Compensation Cost Not yet Recognized, Year Three

+ References

No definition available.

+ Details

Name:	hr_EmployeeServiceShareBasedCompensationNonVestedAwardsCompensationCostNotYetRecognizedYearThree
Namespace Prefix:	hr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Employee Service Share-based Compensation, Non Vested Awards, Compensation Cost Not yet Recognized, Year Two

+ References

No definition available.

+ Details

Name:	hr_EmployeeServiceShareBasedCompensationNonVestedAwardsCompensationCostNotYetRecognizedYearTwo
Namespace Prefix:	hr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Employee Service Share-based Compensation, Non Vested Awards, Compensation Cost Not yet Recognized, Next Twelve Months

+ References

No definition available.

+ Details

Name:	hr_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNextTwelveMonths
Namespace Prefix:	hr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Employee Service Share-based Compensation, Non Vested Awards, Compensation Cost Not yet Recognized, Remainder Of Fiscal Year

+ References

No definition available.

+ Details

Name:	hr_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedRemainderOfFiscalYear
Namespace Prefix:	hr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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