v2.4.0.6

Real Estate and Accumulated Depreciation (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2011
Real Estate And Accumulated Depreciation (Textual) [Abstract]
Aggregate cost for Federal tax purposes	$ 18,400,000,000
Mortgage notes	3,000,000,000
ProLogis American Industrial Fund II	277,000,000
Assessment bonds	743,800,000
Amount secured of mortgage notes	7,100,000,000
Assessment bonds	$ 17,700,000
Capital Improvements [Member] | Maximum [Member]
Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	7
Capital Improvements [Member] | Minimum [Member]
Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	5
Standard Tenant Improvements [Member]
Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	10
Acquired Industrial Properties [Member]
Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	30
Properties Developed [Member]
Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	40
Land improvements on developed buildings [Member]
Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	25

X

- Definition

Properties collateral for assessment bonds.

+ References

No definition available.

+ Details

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Namespace Prefix:	pld_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Properties collateral for loans.

+ References

No definition available.

+ Details

Name:	pld_PropertiesCollateralForLoans
Namespace Prefix:	pld_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Properties collateral for notes.

+ References

No definition available.

+ Details

Name:	pld_PropertiesCollateralForNotes
Namespace Prefix:	pld_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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Namespace Prefix:	pld_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Secured assessment bonds.

+ References

No definition available.

+ Details

Name:	pld_SecuredAssessmentBonds
Namespace Prefix:	pld_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of a lien or mortgage outstanding as of the balance sheet date on a specific property.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 970

-SubTopic 360

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-28)

-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule III

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule III)

-URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The estimated economic life on which depreciation in the latest income statement was computed, typically stated in number of years (such as 5 or 4.5).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 970

-SubTopic 360

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-28)

-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule III

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule III)

-URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674

+ Details

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

X

- Details

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

X

- Definition

The amount of the cost basis of a real estate investment for federal income tax purposes.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 970

-SubTopic 360

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-28.FN6)

-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule III

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule III)

-URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674

+ Details

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