Name:	hiw_AdditionalBorrowingCapacity
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Period Type:	instant

The amount of debt discount that was originally recognized at the issuance of the instrument.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Maximum period of time (in years) for liquidity requirements to be considered short term.

No definition available.

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The number of optional extensions available to extend the loan maturity date.

No definition available.

Name:	hiw_NumberOfAdditionalExtensions
Namespace Prefix:	hiw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The period for which there is an option to extend the maturity date of the facility, debt instrument or loan receivable, in years.

No definition available.

Name:	hiw_Termofoptionalextension
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Period Type:	duration

The undepreciated book value of real estate assets that are used to secure certain mortgages and notes payable.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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Data Type:	dtr-types:percentItemType
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Period Type:	duration

Description of reference rate used for variable rate of debt instrument.

No definition available.

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Face (par) amount of debt instrument at time of issuance.

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Period Type:	instant

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DebtInstrumentLineItems
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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Balance Type:	debit
Period Type:	instant

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Name:	us-gaap_LineOfCredit
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

No definition available.

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Description of interest rate for borrowing under credit facility. Includes, but is not limited to, terms and method for determining interest rate.

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Data Type:	xbrli:stringItemType
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Period Type:	duration

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Including the current and noncurrent portions, carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Namespace Prefix:	us-gaap_
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