Earnings Per Common Share / Unit - Computation of Basic and Diluted Earnings Per Share Unit (Parenthetical) (Detail) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Weighted average exchangeable Operating Partnership units outstanding	1,843	1,859	1,792	1,882
Total weighted average potentially dilutive limited partnership units outstanding	14,170	14,133	14,903	14,070
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	1,944	1,950	1,947	1,426
Total weighted average potentially dilutive exchangeable debt outstanding	11,879	11,879	11,879	11,879