Area covered under real estate investment sold in measurement units.

No definition available.

Name:	hr_AreaCoveredUnderRealEstateInvestmentSoldInMeasurementUnits
Namespace Prefix:	hr_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Closing Adjustments Disposed Entity, including closing costs and other adjustments to the sales price.

+ References

No definition available.

+ Details

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

- Definition

Disposition Sales Price

+ References

No definition available.

+ Details

Name:	hr_DispositionSalesPrice
Namespace Prefix:	hr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Finance Mortgage Notes

+ References

No definition available.

+ Details

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

- Definition

Joint Venture, Ownership Percentage

+ References

No definition available.

+ Details

Name:	hr_JointVentureOwnershipPercentage
Namespace Prefix:	hr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Mortgage Note

+ References

No definition available.

+ Details

Name:	hr_MortgageNote
Namespace Prefix:	hr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of Property Dispositions

+ References

No definition available.

+ Details

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

- Definition

Real estate dispositions.

+ References

No definition available.

+ Details

Name:	hr_RealEstateDispositionsLineItems
Namespace Prefix:	hr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Real estate investment net disposed of during the Period.

+ References

No definition available.

+ Details

Name:	hr_RealEstateInvestmentNetDisposedOfDuringPeriod
Namespace Prefix:	hr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Real estate other.

+ References

No definition available.

+ Details

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

- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2443-110228

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

+ Details

Name:	us-gaap_GainLossOnDispositionOfAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	hr_RealEstateDispositionsAndMortgageNoteRepaymentsAxis=hr_RealEstateDispositionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=hr_TampaFLMiamiFLMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=hr_DallasTXMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=hr_STLouisMoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=hr_LosAngelesCaliforniaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Real Estate Investments - Dispositions (Details) $ in Thousands						3 Months Ended
	Mar. 30, 2023 USD ($) ft²	Mar. 23, 2023 USD ($) ft²	Jan. 30, 2023 USD ($) ft²	Jan. 12, 2023 USD ($) ft² disposition_transaction property	Jul. 29, 2022 USD ($)	Mar. 31, 2023 USD ($) ft² property	Feb. 10, 2023 USD ($) ft²
Real Estate Dispositions [Line Items]
COMPANY-FINANCED MORTGAGE NOTES						$ (45,000)
Number of owned real estate properties \| property						681
Mortgage note	$ 45,000
Real Estate Dispositions
Real Estate Dispositions [Line Items]
SALE PRICE						$ 208,810
CLOSING ADJUSTMENTS						(14,639)
NET PROCEEDS						149,171
NET REAL ESTATE INVESTMENT						215,920
Other (including receivables)						(1,596)
GAIN/(IMPAIRMENT)						$ (20,153)
SQUARE FOOTAGE \| ft²						451,471
Tampa Fl & Miami FL
Real Estate Dispositions [Line Items]
SALE PRICE				$ 93,250
CLOSING ADJUSTMENTS				(5,875)
COMPANY-FINANCED MORTGAGE NOTES				0
NET PROCEEDS				87,375
NET REAL ESTATE INVESTMENT				87,302
Other (including receivables)				(888)
GAIN/(IMPAIRMENT)				$ 961
SQUARE FOOTAGE \| ft²				224,037
Number of owned real estate properties \| property				2
Number of property dispositions \| disposition_transaction				2
Dallas, TX
Real Estate Dispositions [Line Items]
SALE PRICE			$ 19,210
CLOSING ADJUSTMENTS			(141)
COMPANY-FINANCED MORTGAGE NOTES			0
NET PROCEEDS			19,069
NET REAL ESTATE INVESTMENT			18,986
Other (including receivables)			43
GAIN/(IMPAIRMENT)			$ 40
SQUARE FOOTAGE \| ft²			36,691
Joint venture, ownership (in percentage)			40.00%
St. Louis, MO
Real Estate Dispositions [Line Items]
SALE PRICE							$ 350
CLOSING ADJUSTMENTS							(18)
COMPANY-FINANCED MORTGAGE NOTES							0
NET PROCEEDS					$ 332
NET REAL ESTATE INVESTMENT							398
Other (including receivables)							$ 0
GAIN/(IMPAIRMENT)					$ (66)
SQUARE FOOTAGE \| ft²							6,500
Los Angeles, CA
Real Estate Dispositions [Line Items]
SALE PRICE	75,000	$ 21,000
CLOSING ADJUSTMENTS	(8,079)	(526)
COMPANY-FINANCED MORTGAGE NOTES	(45,000)	0
NET PROCEEDS	21,921	20,474
NET REAL ESTATE INVESTMENT	88,624	20,610
Other (including receivables)	(803)	52
GAIN/(IMPAIRMENT)	$ (20,900)	$ (188)
SQUARE FOOTAGE \| ft²	147,078	37,165