v2.4.0.6
Unconsolidated Entities (Details Textual) (USD $)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2012
Jun. 30, 2012
Property
Recievables
Investment
Transactions
Jun. 30, 2011
Jun. 30, 2012
Property
Buildings
Recievables
Investment
Transactions
Jun. 30, 2011
Dec. 31, 2011
Schedule of Equity Method Investments [Line Items]            
Fees earned from other investees and third parties   $ 500,000 $ 2,600,000 $ 1,500,000 $ 5,700,000  
Intercompany notes receivable   19,800,000   19,800,000   41,200,000
Earnings from unconsolidated entities, net   3,889,000 11,399,000 17,884,000 25,040,000  
Unconsolidated Entities (Textual) [Abstract]            
Investments in unconsolidated property funds   13   13    
Unconsolidated co-investment ventures       1    
Number of co-investment ventures   2   2    
Number of receivables   1   1    
Amount of debt on unconsolidated co-investment ventures   500,000   1,400,000    
Commitments from third parties, Secured 55,000,000     265,500,000 128,000,000  
Extinguishment of debt   5,000,000   5,000,000    
Number of buildings acquired by co-investment venture       2    
Equity method investment partner contribution       14,300,000    
Number of properties contributed to venture       1    
Undepreciated cost           277,000,000
Guaranteed Debt   28,000,000   28,000,000   28,000,000
Number of types of transactions   3   3    
Other joint ventures [Member]
            
Schedule of Equity Method Investments [Line Items]            
Return of capital       95,000,000    
Maximum [Member]
            
Schedule of Equity Method Investments [Line Items]            
Percentage of equity interest holds in unconsolidated joint venture       50.00%    
Minimum [Member]
            
Schedule of Equity Method Investments [Line Items]            
Percentage of equity interest holds in unconsolidated joint venture       15.00%    
U.S. Prologis North American Industrial Fund III [Member]
            
Schedule of Equity Method Investments [Line Items]            
Intercompany notes receivable           21,400,000
Equity method investments, Extinguishment of Debt         25,100,000  
Earnings from unconsolidated entities, net     5,000,000      
Prologis SGP Mexico Fund [Member]
            
Schedule of Equity Method Investments [Line Items]            
Intercompany notes receivable           $ 19,800,000