Noncontrolling Interests - Noncontrolling Interest Summary (Detail) - USD ($) $ in Thousands		6 Months Ended	12 Months Ended
		Jun. 30, 2019	Dec. 31, 2018
Noncontrolling Interest [Line Items]
Operating Partnership noncontrolling interest		$ 2,786,183	$ 2,836,469
Noncontrolling interests		3,446,625	3,502,795
Total Assets		38,706,750	38,417,664
Total Liabilities		12,929,317	12,616,776
Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Total Assets		7,058,596	7,117,289
Total Liabilities		$ 192,493	$ 145,927
Prologis US Logistics Venture [Member]
Noncontrolling Interest [Line Items]
Parent Company's Ownership Percentage		55.00%	55.00%
Operating Partnership noncontrolling interest		$ 2,670,699	$ 2,697,095
Total Assets		6,021,777	6,072,087
Total Liabilities		$ 96,881	$ 92,782
Other Consolidated Entities [Member]
Noncontrolling Interest [Line Items]
Parent Company's Ownership	[1]	various	various
Operating Partnership noncontrolling interest	[1]	$ 115,484	$ 139,374
Total Assets	[1]	1,036,819	1,045,202
Total Liabilities	[1]	95,612	53,145
Prologis, L.P. [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests		2,786,183	2,836,469
Total Assets		38,706,750	38,417,664
Total Liabilities		12,929,317	12,616,776
Prologis, L.P. [Member] | Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Limited partners in Prologis, L.P.	[2],[3]	660,442	666,326
Total Assets	[2],[3]	0	0
Total Liabilities	[2],[3]	0	0
Prologis Inc [Member]
Noncontrolling Interest [Line Items]
Total Assets		7,058,596	7,117,289
Total Liabilities		192,493	145,927
Prologis Inc [Member] | Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests		$ 3,446,625	$ 3,502,795

[1] Includes our two partnerships that have issued limited partnership units to third parties, as discussed above, along with various other consolidated entities. The limited partnership units outstanding at June 30, 2019 and December 31, 2018 were exchangeable into cash or, at our option, 0.4 million and 0.7 million shares of the Parent’s common stock, respectively.

[2] We had 8.8 million Class A Units that were convertible into 8.3 million and 8.4 million limited partnership units of the OP at June 30, 2019 and December 31, 2018, respectively.

[3] At June 30, 2019 and December 31, 2018, excluding the Class A Units, there were limited partnership units in the OP that were exchangeable into cash or, at our option, 6.6 million and 7.2 million shares of the Parent’s common stock, respectively. Also included are the vested OP Long-Term Incentive Plan Units (“LTIP Units”) associated with our long-term compensation plan. See further discussion of LTIP Units in Note 8.