Unconsolidated Entities - Summary of Remaining Equity Commitments (Parenthetical) (Detail) $ in Millions	1 Months Ended
	Jan. 31, 2016 USD ($)	Dec. 31, 2015 $ / € $ / £
Subsequent Event [Member]
Schedule Of Equity Method Investments [Line Items]
Increase equity commitments | $	$ 882.4
Subsequent Event [Member] | China [Member]
Schedule Of Equity Method Investments [Line Items]
Increase equity commitments | $	$ 132.4
Prologis Targeted Europe Logistics Fund [Member] | U.S. Dollars to Euro [Member]
Schedule Of Equity Method Investments [Line Items]
Exchange rate		1.09
Prologis European Properties Fund II [Member] | U.S. Dollars to Euro [Member]
Schedule Of Equity Method Investments [Line Items]
Exchange rate		1.09
Europe Logistics Venture 1 [Member] | U.S. Dollars to Euro [Member]
Schedule Of Equity Method Investments [Line Items]
Exchange rate		1.09
Prologis European Logistics Partners [Member] | British Pound Sterling to U.S. Dollar [Member]
Schedule Of Equity Method Investments [Line Items]
Exchange rate | $ / £		1.48