Unconsolidated Entities - Summary of Remaining Equity Commitments (Detail) In Millions, unless otherwise specified					6 Months Ended								3 Months Ended
	Jun. 30, 2013 Prologis [Member] USD ($)	Jun. 30, 2013 Venture Partners [Member] USD ($)	Jun. 30, 2013 Prologis Targeted U.S. Logistics Fund [Member] Prologis [Member] USD ($)	Jun. 30, 2013 Prologis Targeted U.S. Logistics Fund [Member] Venture Partners [Member] USD ($)	Jun. 30, 2013 Prologis European Properties Fund II [Member] USD ($)	Jun. 30, 2013 Prologis European Properties Fund II [Member] EUR (€)	Jun. 30, 2013 Prologis European Properties Fund II [Member] Prologis [Member] USD ($)	Jun. 30, 2013 Prologis European Properties Fund II [Member] Venture Partners [Member] USD ($)	Jun. 30, 2013 Prologis SGP Mexico [Member] Prologis [Member] USD ($)	Jun. 30, 2013 Prologis SGP Mexico [Member] Venture Partners [Member] USD ($)	Jun. 30, 2013 Europe Logistics Venture 1 [Member] Prologis [Member] USD ($)	Jun. 30, 2013 Europe Logistics Venture 1 [Member] Venture Partners [Member] USD ($)	Jun. 30, 2013 Prologis European Logistics Partners [Member] USD ($)	Jun. 30, 2013 Prologis European Logistics Partners [Member] EUR (€)	Jun. 30, 2013 Prologis European Logistics Partners [Member] Prologis [Member] USD ($)	Jun. 30, 2013 Prologis European Logistics Partners [Member] Venture Partners [Member] USD ($)	Jun. 30, 2013 Prologis Targeted European Logistics Fund [Member] USD ($)	Jun. 30, 2013 Prologis Targeted European Logistics Fund [Member] EUR (€)	Jun. 30, 2013 Prologis Targeted European Logistics Fund [Member] Prologis [Member] USD ($)	Jun. 30, 2013 Prologis Targeted European Logistics Fund [Member] Venture Partners [Member] USD ($)	Jun. 30, 2013 Prologis China Logistics Venture 1 [Member] Prologis [Member] USD ($)	Jun. 30, 2013 Prologis China Logistics Venture 1 [Member] Venture Partners [Member] USD ($)
Schedule Of Equity Method Investments Joint Ventures [Line Items]
Remaining equity commitments	$ 776.8	$ 1,114.9	$ 100.0	$ 31.5			$ 111.2	$ 27.5	$ 24.6	$ 98.1	$ 53.7	$ 304.3			$ 277.5	$ 277.5	$ 209.5	€ 160.0	$ 143.9	$ 2.6	$ 65.9	$ 373.4
Equity method investment remaining contribution					$ 11.8	€ 9.0							$ 90.3	€ 69.0