Earnings Per Common Share or Unit - Computation of Basic and Diluted Earnings Per Share Unit (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Net earnings attributable to common stockholders/unit holders - Basic	$ 347,047	$ 365,902
Net earnings attributable to exchangeable limited partnership units	10,657	10,693
Adjusted net earnings attributable to common stockholders – Diluted	$ 357,704	$ 376,595
Weighted average common shares/units outstanding – Basic	629,676	532,185
Incremental weighted average effect on exchange of limited partnership units	19,718	16,270
Incremental weighted average effect of equity awards	4,965	5,668
Weighted average common shares/partnership units outstanding - Diluted	654,359	554,123
Net earnings per share/unit attributable to common stockholders/unitholders -
Basic	$ 0.55	$ 0.69
Diluted	$ 0.55	$ 0.68
Prologis, L.P. [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Net earnings attributable to common stockholders/unit holders - Basic	$ 357,621	$ 376,425
Net earnings attributable to exchangeable limited partnership units	83	170
Adjusted net earnings attributable to common stockholders – Diluted	$ 357,704	$ 376,595
Weighted average common shares/units outstanding – Basic	640,504	538,977
Incremental weighted average effect on exchange of Class A convertible units	8,356	8,512
Incremental weighted average effect on exchange of limited partnership units	534	966
Incremental weighted average effect of equity awards	4,965	5,668
Weighted average common shares/partnership units outstanding - Diluted	654,359	554,123
Net earnings per share/unit attributable to common stockholders/unitholders -
Basic	$ 0.55	$ 0.69
Diluted	$ 0.55	$ 0.68
Prologis, L.P. [Member] | Class A Common [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Net earnings attributable to common stockholders/unit holders - Basic	$ (4,606)	$ (5,853)
Adjusted net earnings attributable to common stockholders – Diluted	4,606	5,853
Prologis, L.P. [Member] | Common Units
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Net earnings attributable to common stockholders/unit holders - Basic	$ 353,015	$ 370,572