Name:	hiw_AdditionalBorrowingCapacity
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Period Type:	instant

Percentage of partner's interest in asset acquired.

No definition available.

Name:	hiw_BusinessAcquisitionPercentageofPartnersInterestinAssetAcquired
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Period Type:	instant

The minimum amount of any indebtedness or guarantee for which if we fail to make a required payment that we would be in cross-default of our interest rate swaps.

No definition available.

Name:	hiw_CrossDefaultMinimumThreshold
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Balance Type:	debit
Period Type:	duration

The number of days to cure a default to remain in compliance with debt covenants.

No definition available.

Name:	hiw_DebtInstrumentCovenantComplianceDaysToCure
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Percentage of holders of bonds needed to accelerate repayment should there be an event of default.

No definition available.

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Percentage of lenders in credit facility needed to accelerate repayment should there be an event of default.

No definition available.

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The amount of capitalized costs associated with the issuance of a debt instrument.

No definition available.

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

No definition available.

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Amount after accumulated amortization of debt issuance costs. Includes, but not limited to, legal, accounting, underwriting, printing, and registration costs.

No definition available.

Name:	hiw_DebtIssuanceCostsNet
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The gross book value of real estate assets that were previously used to secure certain mortgages and notes payable.

No definition available.

Name:	hiw_GrossBookValueOfUnencumberedRealEstateAssets
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Reflects when the credit facility terminates, which is presented in a variety of ways (years, month and year, day, month, and year, quarter).

No definition available.

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

No definition available.

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Percentage of amount that exceeds the outstanding principal of the first mortgage note and the funds deposited into escrow, including a stated return on such funds.

No definition available.

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Stated return on funds deposited in escrow.

No definition available.

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The term of the debt instrument, in years.

No definition available.

Name:	hiw_TermOfDebtInstrument
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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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The amount of financial liabilities assumed (as defined) which have been recognized as of the acquisition date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of the total principal payments made during the annual reporting period.

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

No definition available.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

No definition available.

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

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount, after accumulated amortization, of debt discount.

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Fixed interest rate related to the interest rate derivative.

No definition available.

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Gross amount of debt extinguished.

No definition available.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of interest capitalized, including amount of allowance for funds used during construction.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

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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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

Name:	us-gaap_LineOfCreditFacilityInterestRateDescription
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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.

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
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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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- References

No definition available.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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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).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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