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Real Estate - Additional Information (Detail)
In Millions, except Per Share data, unless otherwise specified
6 Months Ended 6 Months Ended
Jun. 30, 2014
USD ($)
sqft
Jun. 30, 2014
Mexican Stock Exchange [Member]
USD ($)
Jun. 30, 2014
Mexican Stock Exchange [Member]
MXN
Jun. 30, 2014
Fibra [Member]
USD ($)
Property
sqft
Jun. 30, 2014
Fibra [Member]
MXN
Property
Jun. 30, 2014
Mexico Fondo Logistico Afores [Member]
sqft
Jun. 30, 2014
Prologis Mexico Industrial Fund [Member]
sqft
Real Estate Properties [Line Items]              
Number of Properties Purchased       177 177    
Square footage of properties 12,600,000     29,700,000 29,700,000 7,600,000 9,500,000
Equity Units received in exchange of combined investments       287.3 287.3    
Ownership interest accounted under equity method       45.00% 45.00%    
Equity units trading value (per share)       $ 2.09 27.00    
Closing price of the equity units (per share)   $ 2.12 27.53        
Gain recognized on disposition of investments in real estate $ 52.5            
Tax expense recognized on disposition of investments in real estate 32.4            
Deferred tax benefit recognized on disposition of investments in real estate 55.5            
Earnings attributable to non controlling interest $ 61.0