Unconsolidated Entities - Summary of Remaining Equity Commitments (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 1,894
Prologis [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	230
Fund Partner
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	1,664
Prologis Targeted U.S. Logistics Fund [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 0
Expiration date for remaining commitments range start	2016
Expiration date for remaining commitments range end	2017
Prologis Targeted U.S. Logistics Fund [Member] | Prologis [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 0
Prologis Targeted U.S. Logistics Fund [Member] | Fund Partner
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	0
Prologis Targeted Europe Logistics Fund [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 326	[1]
Expiration date for remaining commitments range start	2016	[2]
Expiration date for remaining commitments range end	2017	[2]
Prologis Targeted Europe Logistics Fund [Member] | Prologis [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 0	[1]
Prologis Targeted Europe Logistics Fund [Member] | Fund Partner
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	326	[1]
Prologis European Properties Fund II [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 46	[1]
Expiration date for remaining commitments range start	2016	[2]
Prologis European Properties Fund II [Member] | Prologis [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 8	[1]
Prologis European Properties Fund II [Member] | Fund Partner
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	38	[1]
Prologis European Logistics Partners [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 100	[2]
Expiration date for remaining commitments	2016-02	[2]
Prologis European Logistics Partners [Member] | Prologis [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 50	[2]
Prologis European Logistics Partners [Member] | Fund Partner
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	50	[2]
Prologis China Logistics Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 1,145	[3]
Expiration date for remaining commitments range start	2016
Expiration date for remaining commitments range end	2017
Prologis China Logistics Venture [Member] | Prologis [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 172	[3]
Prologis China Logistics Venture [Member] | Fund Partner
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 973	[3]

[1] Equity commitments are denominated in euro and reported in U.S. dollars based on an exchange rate of $1.09 U.S. dollars to the euro.

[2] The equity commitments for this venture are expected to fund the future repayment of debt that is denominated in British pounds sterling. The commitments will be called in euros and are reported in U.S. dollars using an exchange rate of $1.48 U.S. dollars to the British pounds sterling.

[3] In January 2016, we reached an agreement with our partner in this venture to increase the equity commitments $882.4 million, of which our share is $132.4 million, to fund future developments in China.