Unconsolidated Entities - Summary of Operating Information and Financial Position of Unconsolidated Co-investment Ventures (Detail) - Unconsolidated Co-Investment Ventures [Member] ft² in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2017 USD ($) ft² Property Venture	Mar. 31, 2016 USD ($) ft² Property Venture	Dec. 31, 2016 USD ($) ft² Property Venture
Schedule Of Equity Method Investments [Line Items]
Number of ventures | Venture		9	9	9
Number of operating properties owned | Property		1,382	1,348	1,367
Square feet | ft²		296	280	291
Total assets		$ 24,086	$ 23,431	$ 23,057
Third-party debt		6,678	6,396	6,546
Total liabilities		8,046	7,755	7,876
Our investment balance	[1]	4,096	4,712	$ 4,058
Revenues		500	475
Net earnings		$ 150	$ 139
U.S. [Member]
Schedule Of Equity Method Investments [Line Items]
Number of ventures | Venture		1	1	1
Number of operating properties owned | Property		381	381	369
Square feet | ft²		51	50	50
Total assets		$ 4,293	$ 4,382	$ 4,238
Third-party debt		1,340	1,447	1,414
Total liabilities		1,424	1,528	1,540
Our investment balance	[1]	430	688	$ 435
Revenues		104	98
Net earnings		$ 36	$ 30
Other Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Number of ventures | Venture		2	2	2
Number of operating properties owned | Property		214	206	213
Square feet | ft²		43	39	42
Total assets		$ 2,836	$ 2,600	$ 2,793
Third-party debt		737	659	739
Total liabilities		812	756	814
Our investment balance	[1]	849	817	$ 845
Revenues		64	57
Net earnings		$ 17	$ 14
Europe [Member]
Schedule Of Equity Method Investments [Line Items]
Number of ventures | Venture	[2],[3]	4	4	4
Number of operating properties owned | Property		702	688	700
Square feet | ft²		165	159	163
Total assets		$ 11,596	$ 11,538	$ 10,853
Third-party debt		2,546	2,511	2,446
Total liabilities		3,463	3,448	3,283
Our investment balance	[1]	2,353	2,759	$ 2,327
Revenues		244	244
Net earnings		$ 73	$ 73
Asia [Member]
Schedule Of Equity Method Investments [Line Items]
Number of ventures | Venture		2	2	2
Number of operating properties owned | Property		85	73	85
Square feet | ft²		37	32	36
Total assets		$ 5,361	$ 4,911	$ 5,173
Third-party debt		2,055	1,779	1,947
Total liabilities		2,347	2,023	2,239
Our investment balance	[1]	464	448	$ 451
Revenues		88	76
Net earnings		$ 24	$ 22
Weighted Average [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[4]	26.90%	31.10%	27.90%
Weighted Average [Member] | U.S. [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[4]	14.20%	22.50%	14.90%
Weighted Average [Member] | Other Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[4]	43.90%	43.70%	43.90%
Weighted Average [Member] | Europe [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[4]	33.20%	38.50%	35.10%
Weighted Average [Member] | Asia [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[4]	15.10%	15.00%	15.10%

[1] The difference between our ownership interest of a venture’s equity and our investment balance at March 31, 2017, and December 31, 2016, results principally from three types of transactions: (i) deferring a portion of the gains we recognize from a contribution of a property to a venture ($465.3 million and $469.9 million, respectively); (ii) recording additional costs associated with our investment in a venture ($124.4 million and $124.1 million, respectively); and (iii) advances to a venture ($155.1 million and $166.1 million, respectively). Included in the advances to our ventures at March 31, 2017, and December 31, 2016, were receivables from Nippon Prologis REIT, Inc. (“NPR”) of $102.3 million and $96.9 million, respectively, related to customer security deposits that originated through a leasing company owned by us that pertain to properties owned by NPR. We have a corresponding payable to NPR’s customers in Other Liabilities.

[2] In February 2017, we formed the Prologis United Kingdom Logistics Venture (“UKLV”), an unconsolidated co-investment venture in which we have a 15.0% ownership interest. UKLV will acquire land, develop buildings and operate and hold logistics real estate assets in the United Kingdom (“U.K.”). Upon formation, we, along with our venture partner, committed £380.0 million ($474.9 million at March 31, 2017), of which our share is £57.0 million ($71.2 million at March 31, 2017). In February 2017, we contributed a portfolio of 3.9 million square feet of stabilized properties, properties under development and land for approximately £202.9 million ($252.1 million). We expect to continue to contribute properties into UKLV as they become stabilized, along with land.

[3] In January 2017, we sold our investment in ELV to our fund partner for $84.3 million and ELV contributed its properties to Prologis Targeted Europe Logistics Fund (“PTELF”) in exchange for equity interests.

[4] Represents our weighted average ownership interest in all co-investment ventures based on each entity’s contribution of total assets, before depreciation, net of other liabilities.