Unconsolidated Entities - Additional Information (Detail) (USD $)	12 Months Ended			1 Months Ended
	Dec. 31, 2014 Investment	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014	Oct. 31, 2013
Schedule of Equity Method Investments [Line Items]
Unconsolidated co-investment ventures	1us-gaap_NumberOfBusinessesAcquired
Third party investors portion reflected in strategic capital income	$ 219,871,000us-gaap_ManagementFeesRevenue	$ 179,472,000us-gaap_ManagementFeesRevenue	$ 126,779,000us-gaap_ManagementFeesRevenue
Earnings from unconsolidated investees	134,288,000	97,220,000	31,676,000
Other Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Earnings from unconsolidated investees	3,200,000	2,600,000	6,000,000
Prologis Targeted U.S. Logistics Fund [Member]
Schedule of Equity Method Investments [Line Items]
Promote fee earned from venture				42,100,000
Third party investors portion reflected in strategic capital income	31,300,000	6,400,000
Expenses included in strategic capital expenses	4,200,000	1,300,000
Prologis SGP Mexico [Member]
Schedule of Equity Method Investments [Line Items]
Promote fee earned from venture					$ 7,900,000

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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