Earnings Per Common Share or Unit - Computation of Basic and Diluted Earnings Per Share Unit (Parenthetical) (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total potential dilutive shares and units outstanding	25,719	24,879	24,992	24,477
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	10,344	10,633	10,417	10,656
Total potentially dilutive stock awards outstanding	9,355	7,176	8,583	6,854
Total potential dilutive shares and units outstanding	19,699	17,809	19,000	17,510
Total potential dilutive shares and units outstanding limited partnership	6,020	7,070	5,992	6,967