General - Additional Information (Detail) shares in Millions, $ in Millions	9 Months Ended
Sep. 30, 2018 USD ($) Segment Ground shares	Sep. 30, 2017 USD ($)
General [Line Items]
Number of reportable segments \| Segment	2
Percentage of common limited partnership interest	2.93%
Capitalized cost \| $	$ 15.7	$ 17.9
Number of ground and office space leases \| Ground	100
General Partner \| Prologis Limited Partnership [Member]
General [Line Items]
Percentage of ownership in operating partnership	97.07%
Preferred [Member] \| Prologis Limited Partnership [Member]
General [Line Items]
Percentage of ownership in operating partnership	100.00%
Class A Common [Member]
General [Line Items]
Class of common limited partnership units designated as class A common units \| shares	8.8

General.

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Outstanding common limited partnership units converted into cash or common shares.

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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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Number of separate real estate development properties located on land subject to ground leases.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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