Noncontrolling Interests - Noncontrolling Interest Summary (Parenthetical) (Detail) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Noncontrolling Interest [Line Items]
Outstanding limited partnership units	1,173,571	1,173,571
Brazil Fund [Member]
Noncontrolling Interest [Line Items]
Investments in unconsolidated entities	139.7
Parent Company's Ownership Percentage	50.00%	50.00%
Prologis, L.P. [Member]
Noncontrolling Interest [Line Items]
Outstanding limited partnership units	1,893,266	1,893,266