Earnings Per Common Share or Unit - Computation of Basic and Diluted Earnings Per Share or Unit (Parenthetical) (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total weighted average potential dilutive shares and units outstanding	28,753	26,901	28,709	27,557
Prologis, L.P. [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total weighted average potentially dilutive Class A Units	8,034	8,154	8,048	8,282
Total weighted average potentially dilutive other limited partnership units	299	306	299	400
Total weighted average potentially dilutive equity awards	7,643	8,141	7,749	8,154
Total weighted average potential dilutive shares and units outstanding	15,976	16,601	16,096	16,836
Total weighted average potential dilutive common limited partnership units	12,777	10,300	12,613	10,721