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Description of Business and Significant Accounting Policies (Details)
shares in Millions, ft² in Millions, $ in Millions
Mar. 31, 2021
USD ($)
ft²
a
shares
Description of Business [Abstract]  
Rentable square feet of commercial real estate properties (in sq feet) | ft² 27.4
Rentable square feet of commercial real estate office properties under development (in sq feet) | ft² 0.8
Undeveloped land suitable for future development (in acres) | a 230
Self insurance liability | $ $ 0.4
Deferred rents included in accounts receivable | $ $ 2.5
Highwoods Properties, Inc. [Member]  
Description of Business [Abstract]  
Common Units of partnership owned by the Company (in shares) | shares 103.6
Percentage of ownership of Common Units (in hundredths) 97.30%
Highwoods Realty Limited Partnership [Member]  
Description of Business [Abstract]  
Common Units of partnership not owned by the Company (in shares) | shares 2.8