Area covered under real estate investment sold in measurement units.

No definition available.

Name:	hr_AreaCoveredUnderRealEstateInvestmentSoldInMeasurementUnits
Namespace Prefix:	hr_
Data Type:	dtr-types1: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

Joint Venture, Ownership Percentage

+ References

No definition available.

+ Details

Name:	hr_JointVentureOwnershipPercentage
Namespace Prefix:	hr_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- 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
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482130/360-10-45-5

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-3

+ 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
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-12

+ 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_AlbanyNYMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_CorporateJointVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

Real Estate Investments - Dispositions (Details) $ in Thousands									6 Months Ended
	Jun. 28, 2024 USD ($) ft²	Jun. 21, 2024 USD ($) ft²	Jun. 06, 2024 USD ($) ft²	May 30, 2024 USD ($) ft²	May 23, 2024 USD ($) ft²	May 20, 2024 USD ($) ft²	Apr. 12, 2024 USD ($) ft²	Apr. 01, 2024 USD ($) ft²	Jun. 30, 2024 USD ($) ft² property
Real Estate Dispositions
Real Estate Dispositions [Line Items]
SALE PRICE									$ 464,866
CLOSING ADJUSTMENTS									(19,649)
NET PROCEEDS									445,217
NET REAL ESTATE INVESTMENT									394,170
OTHER (INCLUDING RECEIVABLES)									27,037
GAIN/(IMPAIRMENT)									$ 24,010
SQUARE FOOTAGE \| ft²									1,159,418
Albany, NY
Real Estate Dispositions [Line Items]
SALE PRICE								$ 725
CLOSING ADJUSTMENTS								(60)
NET PROCEEDS								665
NET REAL ESTATE INVESTMENT								765
OTHER (INCLUDING RECEIVABLES)								(82)
GAIN/(IMPAIRMENT)								$ (18)
SQUARE FOOTAGE \| ft²								14,800
San Angelo, TX
Real Estate Dispositions [Line Items]
SALE PRICE							$ 5,085
CLOSING ADJUSTMENTS							(128)
NET PROCEEDS							4,957
NET REAL ESTATE INVESTMENT							4,917
OTHER (INCLUDING RECEIVABLES)							66
GAIN/(IMPAIRMENT)							$ (26)
SQUARE FOOTAGE \| ft²							24,580
Houston, TX
Real Estate Dispositions [Line Items]
SALE PRICE						$ 250
CLOSING ADJUSTMENTS						(9)
NET PROCEEDS						241
NET REAL ESTATE INVESTMENT						713
OTHER (INCLUDING RECEIVABLES)						(520)
GAIN/(IMPAIRMENT)						$ 48
SQUARE FOOTAGE \| ft²						37,040
Multiple
Real Estate Dispositions [Line Items]
SALE PRICE					$ 284,348
CLOSING ADJUSTMENTS					(14,270)
NET PROCEEDS					270,078
NET REAL ESTATE INVESTMENT					254,176
OTHER (INCLUDING RECEIVABLES)					25,836
GAIN/(IMPAIRMENT)					$ (9,934)
SQUARE FOOTAGE \| ft²					556,274
Multiple \| Joint Venture
Real Estate Dispositions [Line Items]
NET PROCEEDS					$ 256,800
Denver, CO
Real Estate Dispositions [Line Items]
SALE PRICE				$ 19,000
CLOSING ADJUSTMENTS				(628)
NET PROCEEDS				18,372
NET REAL ESTATE INVESTMENT				18,522
OTHER (INCLUDING RECEIVABLES)				165
GAIN/(IMPAIRMENT)				$ (315)
SQUARE FOOTAGE \| ft²				37,130
Austin, TX
Real Estate Dispositions [Line Items]
SALE PRICE			$ 54,858
CLOSING ADJUSTMENTS			(1,575)
NET PROCEEDS			53,283
NET REAL ESTATE INVESTMENT			27,964
OTHER (INCLUDING RECEIVABLES)			623
GAIN/(IMPAIRMENT)			$ 24,696
SQUARE FOOTAGE \| ft²			129,879
Number of owned real estate properties \| property									1
Joint venture, ownership (in percentage)									20.00%
Minneapolis, MN
Real Estate Dispositions [Line Items]
SALE PRICE		$ 1,082
CLOSING ADJUSTMENTS		(144)
NET PROCEEDS		938
NET REAL ESTATE INVESTMENT		303
OTHER (INCLUDING RECEIVABLES)		43
GAIN/(IMPAIRMENT)		$ 592
SQUARE FOOTAGE \| ft²		50,291
Greensboro/Raleigh, NC
Real Estate Dispositions [Line Items]
SALE PRICE	$ 99,518
CLOSING ADJUSTMENTS	(2,835)
NET PROCEEDS	96,683
NET REAL ESTATE INVESTMENT	86,810
OTHER (INCLUDING RECEIVABLES)	906
GAIN/(IMPAIRMENT)	$ 8,967
SQUARE FOOTAGE \| ft²	309,424
Los Angeles, California
Real Estate Dispositions [Line Items]
Number of owned real estate properties \| property									2
Seattle, WA
Real Estate Dispositions [Line Items]
Number of owned real estate properties \| property									4
Greensboro, NC \| Real Estate Dispositions
Real Estate Dispositions [Line Items]
Number of owned real estate properties \| property									7
Raleigh, NC
Real Estate Dispositions [Line Items]
Number of owned real estate properties \| property									1
Joint venture, ownership (in percentage)									20.00%
Raleigh, NC \| Real Estate Dispositions
Real Estate Dispositions [Line Items]
Number of owned real estate properties \| property									2
Atlanta, GA
Real Estate Dispositions [Line Items]
Number of owned real estate properties \| property									1
Joint venture, ownership (in percentage)									20.00%
Philadelphia, PA
Real Estate Dispositions [Line Items]
Number of owned real estate properties \| property									1
Joint venture, ownership (in percentage)									20.00%
New York, NY
Real Estate Dispositions [Line Items]
Number of owned real estate properties \| property									1
Joint venture, ownership (in percentage)									20.00%