Stockholders' Equity of Prologis Inc and Partners Capital of the Operating Partnership - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Mar. 31, 2015	Jun. 30, 2015	Mar. 31, 2015
Shareholders Equity [Line Items]
Number of share issued on debt conversion	11,900,000		11,900,000
KTR Capital Partners and Affiliates [Member]
Shareholders Equity [Line Items]
Common limited partnership units, shares		4,500,000
At the Market Offering [Member]
Shareholders Equity [Line Items]
Common stock, shares issued			1,700,000
Common stock, shares outstanding			$ 71.6