Real Estate - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012 sqft acre	Sep. 30, 2011	Sep. 30, 2012 Buildings sqft acre	Sep. 30, 2011
Real Estate Properties [Line Items]
Number of operating buildings acquired			10
Square feet of properties	1,300,000		1,300,000
Payments to acquire buildings			$ 60,400,000
Acquisition acres of land	350		350
Gains on acquisitions and dispositions of investments in real estate, net	12,677,000	8,396,000	280,968,000	114,650,000
Prologis Europe Logistics Venture One [Member]
Real Estate Properties [Line Items]
Square feet of properties	100,000		100,000
Prologis European Properties Fund II [Member]
Real Estate Properties [Line Items]
Square feet of properties	100,000		100,000
Prologis California [Member]
Real Estate Properties [Line Items]
Gains on acquisitions and dispositions of investments in real estate, net			$ 273,000,000