Earnings Per Common Share or Unit - Computation of Basic and Diluted Earnings Per Share Unit (Parenthetical) (Detail) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total potential dilutive shares and units outstanding	24,108	19,997
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	10,678	1,885
Total potentially dilutive stock awards outstanding	6,565	7,391
Total weighted average potentially dilutive shares and units from exchangeable debt outstanding	0	8,812
Total potential dilutive shares and units outstanding	17,243	18,088
Total potential dilutive shares and units outstanding limited partnership	6,865	1,909