Unconsolidated Entities - Summary of Remaining Equity Commitments (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($)
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 2,541
Prologis Europe Logistics Fund
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 346	[1]
Expiration date for remaining commitments range start	2017	[1]
Expiration date for remaining commitments range end	2018	[1]
Prologis U.K. Logistics Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 236	[2]
Expiration date for remaining commitments range start	2021	[2]
Prologis China Logistics Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 1,959
Expiration date for remaining commitments range start	2017
Prologis Inc [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 329
Prologis Inc [Member] | Prologis Europe Logistics Fund
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	0	[1]
Prologis Inc [Member] | Prologis U.K. Logistics Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	35	[2]
Prologis Inc [Member] | Prologis China Logistics Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	294
Venture Partners [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	2,212
Venture Partners [Member] | Prologis Europe Logistics Fund
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	346	[1]
Venture Partners [Member] | Prologis U.K. Logistics Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	201	[2]
Venture Partners [Member] | Prologis China Logistics Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 1,665

[1] Equity commitments are denominated in euro and reported in U.S. dollars based on an exchange rate of $1.14 U.S. dollars to the euro.

[2] As discussed above, this co-investment venture was formed in February 2017. Equity commitments are denominated in British pounds sterling and reported in U.S. dollars based on an exchange rate of $1.30 U.S. dollars to the British pound sterling.