Noncontrolling Interests - Noncontrolling Interest Summary (Parenthetical) (Detail) - USD ($) shares in Thousands, $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	May. 31, 2015	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Noncontrolling Interest [Line Items]
Outstanding limited partnership redemption value		$ 3.2	$ 3.2
Business acquisition, common limited partnership units issued			6,400	1,800
Fair value of outstanding limited partnership units		$ 275.0	$ 275.0	$ 76.0
Restricted Operating Partnership Units [Member]
Noncontrolling Interest [Line Items]
Number of units outstanding		1,200	1,200	100
Class A convertible common units [Member]
Noncontrolling Interest [Line Items]
Issuance of units related to acquisition, shares		8,900
Common Stock [Member]
Noncontrolling Interest [Line Items]
Class of common limited partnership units designated as class A common units		1,835	1,835	1,887
Prologis Brazil Logistics Partners Fund I [Member]
Noncontrolling Interest [Line Items]
Investments in unconsolidated entities		$ 103.1	$ 103.1	$ 152.0
KTR Capital Partners and Affiliates [Member]
Noncontrolling Interest [Line Items]
Contribution received from venture partner			$ 2,300.0
Issuance of units related to acquisition, shares	4,500
Business acquisition, common limited partnership units issued			4,700