Unconsolidated Entities - Summarized Financial Information of Co-Investment Ventures (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified						12 Months Ended	3 Months Ended
	Mar. 31, 2014 Venture	Dec. 31, 2013	Mar. 31, 2013 Venture	Mar. 31, 2014 Nippon Prologis REIT Inc [Member]	Dec. 31, 2013 Nippon Prologis REIT Inc [Member]	Dec. 31, 2013 Prologis European Logistics Partners [Member]	Mar. 31, 2014 U.S, Prologis North American Industrial Fund III [Member] Property Venture
Schedule Of Equity Method Investments Joint Ventures [Line Items]
Number of co-investment ventures	2		2				1
Number of Co-investment ventures concluded	3
Intercompany notes receivable				$ 87.8	$ 88.5
Proceeds of remaining sale						35.5
Guaranteed debt	0	0
Gain (Loss) on disposition of property							$ 21.1
Number of disposed Properties							2