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Mortgages and Notes Payable (Details) (USD $) | 3 Months Ended | 9 Months Ended |  | 3 Months Ended |  | 3 Months Ended |  | 3 Months Ended |  |  |  |  | 3 Months Ended | 9 Months Ended |  | 3 Months Ended |  | 3 Months Ended |  | 3 Months Ended |  |  |  |
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Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2011 | Sep. 30, 2012 Revolving Credit Facility due 2015 [Member] | Oct. 22, 2012 Revolving Credit Facility due 2015 [Member] | Jun. 30, 2012 5.85% (5.88% effective rate) Notes due 2017 [Member] | Sep. 30, 2012 Variable Rate Construction Loan due 2012 [Member] | Mar. 31, 2012 Variable Rate Term Loan due 2016 [Member] | Sep. 30, 2012 Secured indebtedness [Member] | Dec. 31, 2011 Secured indebtedness [Member] | Sep. 30, 2012 Unsecured indebtedness [Member] | Dec. 31, 2011 Unsecured indebtedness [Member] | Sep. 30, 2012 Highwoods Realty Limited Partnership [Member] | Sep. 30, 2011 Highwoods Realty Limited Partnership [Member] | Sep. 30, 2012 Highwoods Realty Limited Partnership [Member] | Sep. 30, 2011 Highwoods Realty Limited Partnership [Member] | Dec. 31, 2011 Highwoods Realty Limited Partnership [Member] | Sep. 30, 2012 Highwoods Realty Limited Partnership [Member] Revolving Credit Facility due 2015 [Member] | Oct. 22, 2012 Highwoods Realty Limited Partnership [Member] Revolving Credit Facility due 2015 [Member] | Jun. 30, 2012 Highwoods Realty Limited Partnership [Member] 5.85% (5.88% effective rate) Notes due 2017 [Member] | Sep. 30, 2012 Highwoods Realty Limited Partnership [Member] Variable Rate Construction Loan due 2012 [Member] | Mar. 31, 2012 Highwoods Realty Limited Partnership [Member] Variable Rate Term Loan due 2016 [Member] | Sep. 30, 2012 Highwoods Realty Limited Partnership [Member] Secured indebtedness [Member] | Dec. 31, 2011 Highwoods Realty Limited Partnership [Member] Secured indebtedness [Member] | Sep. 30, 2012 Highwoods Realty Limited Partnership [Member] Unsecured indebtedness [Member] | Dec. 31, 2011 Highwoods Realty Limited Partnership [Member] Unsecured indebtedness [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgages and notes payable | $ 1,778,555,000 |  | $ 1,778,555,000 |  | $ 1,868,906,000 |  |  |  |  |  | $ 685,390,000 | $ 715,742,000 | $ 1,093,165,000 | $ 1,153,164,000 | $ 1,778,555,000 |  | $ 1,778,555,000 |  | $ 1,868,906,000 |  |  |  |  |  | $ 685,390,000 | $ 715,742,000 | $ 1,093,165,000 | $ 1,153,164,000
Aggregate undepreciated book value of secured real estate assets |  |  |  |  |  |  |  |  |  |  | 1,148,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,148,200,000 |  |  |
Maximum borrowing capacity on revolving credit facility |  |  |  |  |  | 475,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 475,000,000 |  |  |  |  |  |  |  |
Maturity date on revolving credit facility |  |  |  |  |  | Jul. 27, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  | Jul. 27, 2015 |  |  |  |  |  |  |  |
Additional borrowing capacity on revolving credit facility |  |  |  |  |  | 75,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 75,000,000 |  |  |  |  |  |  |  |
Credit facility, interest rate basis |  |  |  |  |  | LIBOR plus basis points |  |  |  |  |  |  |  |  |  |  |  |  |  | LIBOR plus basis points |  |  |  |  |  |  |  |
Credit facility, current interest rate (in hundredths) |  |  |  |  |  | 1.50% |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.50% |  |  |  |  |  |  |  |
Annual facility fee (in hundredths) |  |  |  |  |  | 0.35% |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.35% |  |  |  |  |  |  |  |
Amount outstanding on revolving credit facility |  |  |  |  |  | 89,000,000 | 59,500,000 |  |  |  |  |  |  |  |  |  |  |  |  | 89,000,000 | 59,500,000 |  |  |  |  |  |  |
Outstanding letters of credit on revolving credit facility |  |  |  |  |  | 100,000 | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 | 100,000 |  |  |  |  |  |  |
Unused borrowing capacity on revolving credit facility |  |  |  |  |  | 385,900,000 | 415,400,000 |  |  |  |  |  |  |  |  |  |  |  |  | 385,900,000 | 415,400,000 |  |  |  |  |  |  |
Principal amount of repurchased debt |  |  |  |  |  |  |  | 12,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,100,000 |  |  |  |  |  |
Debt instrument maturity date |  |  |  |  |  |  |  | Mar. 15, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  | Mar. 15, 2017 |  |  |  |  |  |
Debt instrument, interest rate basis |  |  |  |  |  |  |  |  |  | LIBOR plus basis points |  |  |  |  |  |  |  |  |  |  |  |  |  | LIBOR plus basis points |  |  |  |
Debt instrument, interest rate basis spread (in hundredths) |  |  |  |  |  |  |  |  |  | 1.90% |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.90% |  |  |  |
Debt instrument, current interest rate (in hundredths) |  |  |  |  |  |  |  | 5.85% |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.85% |  |  |  |  |  |
Purchase price of debt, percentage of par value (in hundredths) |  |  |  |  |  |  |  | 107.50% |  |  |  |  |  |  |  |  |  |  |  |  |  | 107.50% |  |  |  |  |  |
Loss on extinguishment of debt | 0 | 0 | (973,000) | (24,000) |  |  |  | 1,000,000 |  |  |  |  |  |  | 0 | 0 | (973,000) | (24,000) |  |  |  | 1,000,000 |  |  |  |  |  |
Principal amount of debt |  |  |  |  |  |  |  |  | $ 34,300,000 | $ 225,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | $ 34,300,000 | $ 225,000,000 |  |  |  |
Term of debt instrument (in years) |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |

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