Real Estate - Additional Information (Detail) (USD $)	12 Months Ended			3 Months Ended		12 Months Ended		12 Months Ended			3 Months Ended
	Dec. 31, 2012 Customer Property sqft Venture	Dec. 31, 2011 Property Venture	Dec. 31, 2010	Mar. 31, 2012 Prologis California [Member]	Dec. 31, 2012 Real Estate And Other Assets [Member] sqft Property	Dec. 31, 2012 Unconsolidated Co-Investment Ventures [Member] Property	Dec. 31, 2012 PEPR [Member] Property Venture	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2012 Europe Logistics Venture 1 [Member] Property	Mar. 31, 2012 Unconsolidated Entities [Member] Prologis North American Properties Fund I [Member]
Real Estate Properties [Line Items]
Gains on acquisitions and dispositions of investments in real estate, net	$ 305,607,000	$ 111,684,000	$ 28,488,000	$ 294,200,000							$ 11,400,000
Cash proceeds from contribution activity	381,900,000
Number of properties under development										25
Square feet of properties	4,800,000				47,900,000
Number of unconsolidated Co-investment ventures	3
Number of properties under development	1,853	1,797			227	191	207
Business acquisition purchase price	2,400,000,000
Cash proceeds from contribution activity						92,500,000
Number of Co investment Ventures	3	7					2
Cash proceeds from contribution activity							$ 5,000,000,000
Operating leases lease term								1 year	60 years
Number of largest customers	25
Annualized collected base rent from largest customer	1.60%
Annualized collected base rent from 25 largest customers	18.70%
Minimum lease payments on leases periods	Greater than one year