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								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Net earnings attributable to common stockholders/unit holders - Basic	$ 295,515	$ 876,218	$ 266,943	$ 203,255	$ 440,539	$ 279,255	$ 275,383	$ 208,041	$ 1,641,931	$ 1,203,218	$ 862,788
Net earnings attributable to exchangeable limited partnership units									46,280	37,079	13,120
Gains, net of expenses, associated with exchangeable debt assumed exchanged									0	0	(1,614)
Adjusted net earnings attributable to common stockholders – Diluted									$ 1,688,211	$ 1,240,297	$ 874,294
Weighted average common shares/units outstanding – Basic									530,400	526,103	521,241
Incremental weighted average effect on exchange of limited partnership units									15,945	16,833	8,569
Incremental weighted average effect of equity awards									5,955	3,730	1,961
Incremental weighted average effect on exchangeable debt assumed exchanged									0	0	2,173
Weighted average common shares/partnership units outstanding - Diluted									552,300	546,666	533,944
Net earnings per share/unit attributable to common stockholders/unitholders -
Basic	$ 0.56	$ 1.65	$ 0.50	$ 0.38	$ 0.83	$ 0.53	$ 0.52	$ 0.40	$ 3.10	$ 2.29	$ 1.66
Diluted	$ 0.55	$ 1.63	$ 0.50	$ 0.38	$ 0.82	$ 0.52	$ 0.52	$ 0.39	$ 3.06	$ 2.27	$ 1.64
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									$ 1,686,945	$ 1,237,519	$ 873,914
Net earnings attributable to exchangeable limited partnership units									1,266	2,778	1,994
Gains, net of expenses, associated with exchangeable debt assumed exchanged									0	0	(1,614)
Adjusted net earnings attributable to common stockholders – Diluted									$ 1,688,211	$ 1,240,297	$ 874,294
Weighted average common shares/units outstanding – Basic									536,335	532,326	525,912
Incremental weighted average effect on exchange of Class A convertible units									8,607	8,775	2,050
Incremental weighted average effect on exchange of limited partnership units									1,403	1,835	1,848
Incremental weighted average effect of equity awards									5,955	3,730	1,961
Incremental weighted average effect on exchangeable debt assumed exchanged									0	0	2,173
Weighted average common shares/partnership units outstanding - Diluted									552,300	546,666	533,944
Net earnings per share/unit attributable to common stockholders/unitholders -
Basic									$ 3.10	$ 2.29	$ 1.66
Diluted									$ 3.06	$ 2.27	$ 1.64
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									$ (26,642)	$ (20,069)	$ (3,393)
Adjusted net earnings attributable to common stockholders – Diluted									26,642	20,069	3,393
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									$ 1,660,303	$ 1,217,450	$ 870,521