Unconsolidated Entities - Summary of Operating Information and Financial Position of Unconsolidated Co-investment Ventures (Detail) $ in Thousands, ft² in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018 USD ($) ft² Property Venture	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) ft² Property Venture	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($) ft² Property Venture
Schedule Of Equity Method Investments [Line Items]
Our earnings from unconsolidated co-investment ventures, net		$ 56,634	$ 55,066	$ 181,839	$ 172,267
Unconsolidated Co-Investment Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Ventures | Venture		8		8		8
Number of buildings | Property		1,546		1,546		1,559
Square feet | ft²		333		333		332
Total assets	[1]	$ 29,361,000		$ 29,361,000		$ 28,899,000
Third-party debt		8,130,000		8,130,000		8,079,000
Total liabilities		9,762,000		9,762,000		9,642,000
Our investment balance	[2]	5,283,000		5,283,000		$ 5,275,000
Total revenues		611,000	581,000	1,837,000	1,589,000
Net earnings		164,000	176,000	485,000	549,000
Our earnings from unconsolidated co-investment ventures, net		$ 56,000	53,000	$ 165,000	160,000
Unconsolidated Co-Investment Ventures [Member] | U.S. [Member]
Schedule Of Equity Method Investments [Line Items]
Ventures | Venture		1		1		1
Number of buildings | Property		556		556		552
Square feet | ft²		88		88		88
Total assets	[1]	$ 7,180,000		$ 7,180,000		$ 7,062,000
Third-party debt		2,093,000		2,093,000		2,313,000
Total liabilities		2,318,000		2,318,000		2,520,000
Our investment balance	[2]	1,358,000		1,358,000		$ 1,383,000
Total revenues		168,000	160,000	504,000	369,000
Net earnings		28,000	64,000	65,000	115,000
Our earnings from unconsolidated co-investment ventures, net		$ 8,000	18,000	$ 20,000	25,000
Unconsolidated Co-Investment Ventures [Member] | Other Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Ventures | Venture		2		2		2
Number of buildings | Property		205		205		205
Square feet | ft²		37		37		37
Total assets	[1]	$ 2,071,000		$ 2,071,000		$ 2,118,000
Third-party debt		752,000		752,000		756,000
Total liabilities		797,000		797,000		782,000
Our investment balance	[2]	559,000		559,000		$ 555,000
Total revenues		54,000	60,000	162,000	190,000
Net earnings		18,000	19,000	51,000	58,000
Our earnings from unconsolidated co-investment ventures, net		$ 7,000	6,000	$ 21,000	22,000
Unconsolidated Co-Investment Ventures [Member] | Europe [Member]
Schedule Of Equity Method Investments [Line Items]
Ventures | Venture		3		3		3
Number of buildings | Property		664		664		707
Square feet | ft²		158		158		166
Total assets	[1]	$ 13,401,000		$ 13,401,000		$ 13,586,000
Third-party debt		2,656,000		2,656,000		2,682,000
Total liabilities		3,727,000		3,727,000		3,655,000
Our investment balance	[2]	2,797,000		2,797,000		$ 2,813,000
Total revenues		272,000	266,000	832,000	758,000
Net earnings		97,000	63,000	300,000	229,000
Our earnings from unconsolidated co-investment ventures, net		$ 37,000	24,000	$ 111,000	90,000
Unconsolidated Co-Investment Ventures [Member] | Asia [Member]
Schedule Of Equity Method Investments [Line Items]
Ventures | Venture		2		2		2
Number of buildings | Property		121		121		95
Square feet | ft²		50		50		41
Total assets	[1]	$ 6,709,000		$ 6,709,000		$ 6,133,000
Third-party debt		2,629,000		2,629,000		2,328,000
Total liabilities		2,920,000		2,920,000		2,685,000
Our investment balance	[2]	569,000		569,000		$ 524,000
Total revenues		117,000	95,000	339,000	272,000
Net earnings		21,000	30,000	69,000	147,000
Our earnings from unconsolidated co-investment ventures, net		$ 4,000	$ 5,000	$ 13,000	$ 23,000
Unconsolidated Co-Investment Ventures [Member] | Weighted Average [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[3]	28.30%		28.30%		28.80%
Unconsolidated Co-Investment Ventures [Member] | Weighted Average [Member] | U.S. [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[3]	26.70%		26.70%		28.20%
Unconsolidated Co-Investment Ventures [Member] | Weighted Average [Member] | Other Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[3]	43.90%		43.90%		43.40%
Unconsolidated Co-Investment Ventures [Member] | Weighted Average [Member] | Europe [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[3]	33.10%		33.10%		32.80%
Unconsolidated Co-Investment Ventures [Member] | Weighted Average [Member] | Asia [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[3]	15.10%		15.10%		15.10%

[1] In October 2018, we and certain unconsolidated co-investment ventures sold a portfolio of operating buildings and land in Europe and the U.S in a single transaction. Included in the total assets of our unconsolidated co-investment ventures is $402.0 million of real estate assets that met the criteria to be classified as assets held for sale.

[2] Prologis’ investment balance is presented at our adjusted basis derived from the ventures’ U.S. GAAP information. The difference between our ownership interest of a venture’s equity and our investment balance at September 30, 2018 and December 31, 2017, results principally from three types of transactions: (i) deferred gains from the contribution of property to a venture prior to January 1, 2018 ($648.1 million and $667.3 million, respectively); (ii) recording additional costs associated with our investment in the venture ($91.4 million and $94.2 million, respectively); and (iii) advances to a venture ($217.6 million and $210.0 million, respectively). For deferred gains from partial sales recorded prior to the adoption of the new revenue recognition standard, we will continue to recognize these gains over the lives of the underlying real estate properties or at the time of disposition to a third party.

[3] 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.