v2.4.1.9

Business Segments - Segment Reporting, Reconciliation of Revenues, Operating Income and Assets (Parenthetical) (Detail) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total revenues	$ 450,865,000us-gaap_RealEstateRevenueNet	$ 415,151,000us-gaap_RealEstateRevenueNet	$ 460,089,000us-gaap_RealEstateRevenueNet	$ 434,682,000us-gaap_RealEstateRevenueNet	$ 436,764,000us-gaap_RealEstateRevenueNet	$ 423,058,000us-gaap_RealEstateRevenueNet	$ 410,693,000us-gaap_RealEstateRevenueNet	$ 479,971,000us-gaap_RealEstateRevenueNet	$ 1,760,787,000us-gaap_RealEstateRevenueNet	$ 1,750,486,000us-gaap_RealEstateRevenueNet	$ 1,960,518,000us-gaap_RealEstateRevenueNet
Europe Private Capital Segment [Member]
Segment Reporting Information [Line Items]
Goodwill	25,300,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pld_EuropePrivateCapitalSegmentMember				25,300,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pld_EuropePrivateCapitalSegmentMember				25,300,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pld_EuropePrivateCapitalSegmentMember	25,300,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pld_EuropePrivateCapitalSegmentMember
United States [Member]
Segment Reporting Information [Line Items]
Total revenues									1,400,000,000us-gaap_RealEstateRevenueNet / us-gaap_StatementGeographicalAxis = country_US	1,100,000,000us-gaap_RealEstateRevenueNet / us-gaap_StatementGeographicalAxis = country_US	1,100,000,000us-gaap_RealEstateRevenueNet / us-gaap_StatementGeographicalAxis = country_US
Long-lived assets attributable to the United States	$ 17,300,000,000us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US				$ 15,300,000,000us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US				$ 17,300,000,000us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US	$ 15,300,000,000us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

+ Details

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

+ Details

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The aggregate revenue from real estate operations during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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Balance Type:	credit
Period Type:	duration

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: