Earnings Per Common Share or Unit - Computation of Basic and Diluted Earnings Per Share Unit (Parenthetical) (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Weighted average exchangeable Operating Partnership units outstanding	4,671	1,766	1,860
Total potentially dilutive stock awards and warrant outstanding	7,299	14,366	13,998
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	3,898	1,932	1,558
Total weighted average potentially dilutive shares and units from exchangeable debt outstanding	2,173	11,879	11,879