XML 68 R50.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Subsequent Events (Details) $ in Millions | Apr. 04, 2016 USD ($) a | Mar. 31, 2016 a
--- | --- | ---
Subsequent Event [Line Items] |  |
Acquisition of development land (in acres) |  | 500
Nashville TN Land Acquisition (04/2016) [Member] | Subsequent Event [Member] |  |
Subsequent Event [Line Items] |  |
Acquisition of development land (in acres) | 14 |
Acquisition purchase price | $ | $ 9.0 |

X
- Definition Area of undeveloped land parcels owned in acres. + References No definition available. + Details
Name: | hiw_AreaOfUndevelopedLand
Namespace Prefix: | hiw_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=hiw_NashvilleTNLandAcquisition042016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |