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Organization and Business (Tables)
9 Months Ended
Sep. 30, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Equity Method Investments
During the periods presented, the Partnership owned interests in the following joint ventures (the "Joint Ventures") and properties:

Joint Venture
Joint Venture Partners
Ownership %
Properties
Fund VIII and Fund IX Associates
("Fund VIII-IX Associates")
• Wells Real Estate Fund VIII, L.P.
• Wells Real Estate Fund IX, L.P.
54.8%
45.2%
1. US Cellular Building
A four-story office building located
in Madison, Wisconsin
 
2. 305 Interlocken Parkway
A two-story office building located
in Broomfield, Colorado
The Fund IX, Fund X, Fund XI and REIT Joint Venture
("Fund IX-X-XI-REIT Associates")(1)
• Wells Real Estate Fund IX, L.P.
• Wells Real Estate Fund X, L.P.
• Wells Real Estate Fund XI, L.P.
• Piedmont Operating Partnership, LP
39.0%
48.5%
8.8%
3.7%
3. 360 Interlocken Building(2)
A three-story office building
located in Broomfield, Colorado
(1) 
This joint venture wound up its affairs in 2011 and was terminated in the first quarter of 2012.
(2) 
This property was sold in June 2011.