Noncontrolling Interests - Noncontrolling Interest Summary (Detail) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2015		May. 29, 2015	Dec. 31, 2014
Noncontrolling Interest [Line Items]
Operating Partnership noncontrolling interest		$ 3,371,425			$ 1,159,901
Noncontrolling interests		3,553,401			1,208,090
Total Investment in Real Estate		24,112,913			19,399,364
Debt		11,934,355			9,380,199
Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Total Investment in Real Estate		$ 10,132,256			$ 4,796,478
Prologis US Logistics Venture [Member]
Noncontrolling Interest [Line Items]
Parent Company's Ownership Percentage		55.00%	[1]	55.00%	55.00%	[1]
Operating Partnership noncontrolling interest	[1]	$ 2,697,369			$ 427,307
Total Investment in Real Estate	[1]	6,508,973			$ 1,006,183
Debt	[1]	$ 729,232
Prologis North American Industrial Fund [Member]
Noncontrolling Interest [Line Items]
Parent Company's Ownership Percentage		66.10%			66.10%
Operating Partnership noncontrolling interest		$ 523,817			$ 544,718
Total Investment in Real Estate		2,616,676			2,771,299
Debt		$ 1,114,579			$ 1,188,836
Prologis Brazil Logistics Partners Fund I [Member]
Noncontrolling Interest [Line Items]
Parent Company's Ownership Percentage	[2]	50.00%			50.00%
Operating Partnership noncontrolling interest	[2]	$ 47,245			$ 68,533
Other Consolidated Entities [Member]
Noncontrolling Interest [Line Items]
Parent Company's Ownership	[3]	various
Operating Partnership noncontrolling interest	[3]	$ 102,994			119,343
Total Investment in Real Estate	[3]	1,006,607			1,018,996
Debt	[3]	16,150			18,270
Prologis, L.P. [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests		3,371,425			1,159,901
Total Investment in Real Estate		24,112,913			19,399,364
Debt		11,934,355			9,380,199
Prologis, L.P. [Member] | Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Limited partners in Prologis, L.P.	[4],[5]	181,976			48,189
Debt		1,859,961			1,207,106
Prologis Inc [Member]
Noncontrolling Interest [Line Items]
Total Investment in Real Estate		10,132,256			4,796,478
Debt		1,859,961			1,207,106
Prologis Inc [Member] | Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests		$ 3,553,401			$ 1,208,090

[1] As discussed in Note 2, USLV acquired a portfolio of properties from KTR in May 2015. We received a contribution of $2.3 billion from our venture partner to fund their share of this acquisition.

[2] The assets of Prologis Brazil Logistics Partners Fund I (“Brazil Fund”) are primarily investments in unconsolidated entities of $101.0 million and $152.0 million at September 30, 2015, and December 31, 2014, respectively. For additional information on our unconsolidated investments, see Note 4.

[3] This line item includes our two partnerships that have issued limited partnership units to third parties, as discussed above, along with various other consolidated entities. At September 30, 2015, and December 31, 2014, limited partnership units were exchangeable into cash or, at our option, 1,835 and 1,887 shares, respectively, of the Parent’s common stock. All of these outstanding limited partnership units receive quarterly cash distributions equal to the quarterly dividends paid on our common stock pursuant to the terms of the applicable partnership agreements.

[4] As discussed in Note 2, we issued 4.5 million common limited partnership units in the Operating Partnership in connection with the KTR acquisition.

[5] At September 30, 2015, and December 31, 2014, limited partnership units in the Operating Partnership were exchangeable into cash or, at our option, 6,554 and 1,767 shares, respectively, of the Parent’s common stock with a fair value of $255.0 million and $76.0 million, respectively, based on the closing stock price of the Parent’s common stock. At September 30, 2015, and December 31, 2014, there were 941 and 113 unvested LTIP Units (as defined in Note 10) outstanding, respectively, associated with our long-term compensation plan that are not exchangeable into the Parent’s common stock until they vest. All of these outstanding limited partnership units receive quarterly cash distributions equal to the quarterly distributions paid on our common stock pursuant to the terms of the partnership agreement.