No definition available.

Name:	hiw_AcquisitionsAbstract
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- Definition

Percentage of partner's interest in asset acquired.

+ References

No definition available.

+ Details

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- Definition

Amount of building and/or tenant improvement closing credits excluded from the sale price for a disposition.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

-- None. No documentation exists for this element. --

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No definition available.

+ Details

Name:	hiw_DispositionsAbstract
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- Definition

The number of buildings sold.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Definition

The maximum percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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- Definition

The purchase price of real estate before and/or after closing credits to buyer for unfunded tenant improvements, building improvements and/or free rent, if any.

+ References

No definition available.

+ Details

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

- Definition

The amount of square footage related to real estate properties.

+ References

No definition available.

+ Details

Name:	hiw_RentableSquareFeetOfCommercialRealEstate
Namespace Prefix:	hiw_
Data Type:	dtr-types:areaItemType
Balance Type:	na
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 http://asc.fasb.org/extlink&oid=123570139&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 http://asc.fasb.org/extlink&oid=123351718&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 http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Real Estate Assets (Details) $ in Thousands	3 Months Ended			6 Months Ended
Real Estate Assets (Details) $ in Thousands	Jun. 30, 2021 USD ($) ft²	Mar. 31, 2021 USD ($) ft² propertyUnit	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) ft²	Jun. 30, 2020 USD ($)
Acquisitions [Abstract]
Rentable square feet of commercial real estate properties (in sq feet) \| ft²	27,300,000			27,300,000
Dispositions [Abstract]
Gains on disposition of property	$ 22,862		$ 318	$ 41,799	$ 153,385
Nashville TN Land Acquisition [Member]
Acquisitions [Abstract]
Acquisition purchase price	16,100
Forum Buildings Acquisition
Acquisitions [Abstract]
Acquisition purchase price		$ 131,300
Percentage of partner's interest in asset acquired (in hundredths)		75.00%
Number of buildings sold \| propertyUnit		5
Rentable square feet of commercial real estate properties (in sq feet) \| ft²		636,000
Percentage of equity interest in joint venture (in hundredths)		25.00%
2021 Dispositions
Dispositions [Abstract]
Purchase price of real estate	43,000	$ 30,700
Closing credits excluded for unfunded building and/or tenant improvements	900
Gains on disposition of property	$ 22,900	$ 18,900