Unconsolidated Entities - Summary of Operating Information and Financial Position of Unconsolidated Co-investment Ventures (Parenthetical) (Detail) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2018		Dec. 31, 2017	Oct. 22, 2018
Schedule Of Equity Method Investments [Line Items]
Unconsolidated co-investment ventures classified as assets held for sale	$ 761,575	[1]	$ 342,060
Deferred gain recognized from contribution of property to a venture	648,100		667,300
Additional costs associated with investment in a venture	91,400		94,200
Advances to venture	$ 217,600		$ 210,000
Land and Building [Member] | Europe and U.S [Member] | Subsequent Event [Member]
Schedule Of Equity Method Investments [Line Items]
Unconsolidated co-investment ventures classified as assets held for sale				$ 402,000

[1] In October 2018, we and certain co-investment ventures sold a portfolio of operating buildings and land in Europe and the U.S. in a single transaction. Included in Assets Held for Sale Or Contribution is $412.2 million of properties owned by Prologis and our consolidated co-investment venture at September 30, 2018.