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v3.19.3.a.u2

Commitments and Contingencies (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Lease and Contractual Commitments [Abstract] |  |  |
Lease and contractual commitments | $ 466,800 |  |
Accrued amount of lease and contractual commitments | 70,500 |  |
Contingent Consideration [Abstract] |  |  |
Asset acquisition, contingent consideration liability | 1,200 | $ 0 | $ 750
Asset Acquisition Contingent Consideration [Member] |  |  |
Contingent Consideration [Abstract] |  |  |
Asset acquisition, contingent consideration liability | $ 5,300 | $ 5,000 |

X
- Definition Amount of liability recognized arising from contingent consideration in an asset acquisition. + References No definition available. + Details
Name: | hiw_AssetAcquisitionContingentConsiderationLiability
Namespace Prefix: | hiw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Completion Contracts [Abstract] + References No definition available. + Details
Name: | hiw_CompletionContractsAbstract
Namespace Prefix: | hiw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contingent Consideration [Abstract] + References No definition available. + Details
Name: | hiw_ContingentConsiderationAbstract
Namespace Prefix: | hiw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount as of the balance sheet date of the entity’s accrued completion contract obligation under signed leases and contracts for operating properties (excluding tenant-funded tenant improvements) and contracts for development/redevelopment projects. + References No definition available. + Details
Name: | hiw_ContractObligationAccrued
Namespace Prefix: | hiw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of the entity’s completion contract obligation under signed leases and contracts for operating properties (excluding tenant-funded tenant improvements) and contracts for development/redevelopment projects. + References No definition available. + Details
Name: | hiw_ContractsObligation
Namespace Prefix: | hiw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=hiw_AssetAcquisitionContingentConsiderationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |