Earnings Per Common Share / Unit - Computation of Basic and Diluted Earnings Per Share Unit (Parenthetical) (Detail) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Weighted average exchangeable Operating Partnership units outstanding	1,908	1,767
Total weighted average potentially dilutive limited partnership units outstanding	7,391	15,546
Prologis, L.P. [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total weighted average potentially dilutive limited partnership units outstanding	1,885	1,949
Total weighted average potentially dilutive exchangeable debt outstanding	8,812	11,879