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, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total weighted average potential dilutive shares and units outstanding	27,386	28,753	27,723	28,709
Prologis, L.P. [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total weighted average potentially dilutive Class A Units	8,003	8,034	8,005	8,048
Total weighted average potentially dilutive other limited partnership units	299	299	299	299
Total weighted average potentially dilutive equity awards	6,965	7,643	6,863	7,749
Total weighted average potential dilutive shares and units outstanding	15,267	15,976	15,167	16,096
Total weighted average potential dilutive common limited partnership units	12,119	12,777	12,556	12,613