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
	Mar. 31, 2021	Mar. 31, 2020
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total weighted average potential dilutive shares and units outstanding	28,221	27,939
Prologis, L.P. [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total weighted average potentially dilutive Class A Units	8,062	8,062
Total weighted average potentially dilutive other limited partnership units	299	299
Total weighted average potentially dilutive equity awards	7,179	7,709
Total weighted average potential dilutive shares and units outstanding	15,540	16,070
Total weighted average potential dilutive common limited partnership units	12,681	11,869