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Partners' Capital of Prologis, L.P. - Additional Information (Detail) - $ / shares
shares in Millions
12 Months Ended
Feb. 04, 2020
Aug. 22, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2015
Shareholders Equity [Line Items]            
Dividends paid     $ 2.32 $ 2.12 $ 1.92  
Common Units [Member]            
Shareholders Equity [Line Items]            
Issuance of units related to acquisitions, units     0.5      
Dividends per share entitled, issued in acquisition           $ 0.40
Common Units [Member] | DCT Transaction [Member]            
Shareholders Equity [Line Items]            
Issuance of units related to acquisitions, units   3.6        
Common Units [Member] | Liberty Transaction [Member]            
Shareholders Equity [Line Items]            
Issuance of units related to acquisitions, units 2.3          
Class A Common [Member]            
Shareholders Equity [Line Items]            
Dividends per share entitled, issued in acquisition           $ 0.64665
Dividends paid     $ 2.58660 $ 2.58660 $ 2.58660  
Class A units convertible into common limited partnership units     8.0 8.1    
Limited partnership unit, redemption price per share     $ 43.11