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Unconsolidated Entities - Summarized Financial Information of Co-Investment Ventures (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified						3 Months Ended
	Mar. 31, 2013 Transactions Venture	Dec. 31, 2012	Mar. 31, 2013 Prologis SGP Mexico [Member]	Dec. 31, 2012 Prologis SGP Mexico [Member]	Mar. 31, 2013 Prologis European Logistics Partners [Member]	Mar. 31, 2013 Operating Building [Member] Brazil Fund [Member]
Schedule Of Equity Method Investments Joint Ventures [Line Items]
Number of Co-investment ventures	2
Gain on sale of buildings						$ 21.1
Intercompany receivable			19.8	19.7	64.9
Guaranteed debt	$ 23.4	$ 30.4
Number of types of transactions	3

Aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due after one year (or one business cycle).

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