v2.4.0.6

Notes Receivable Backed by Real Estate (Details) (USD $) | 1 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2011 Parcels Property | Dec. 31, 2011 Land_Position Property | Dec. 31, 2011 Parcels Property | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2011 $188 million Preferred Equity Interest [Member] | Dec. 31, 2010 $188 million Preferred Equity Interest [Member] | Dec. 31, 2011 $55 million preferred equity interest [Member] | Mar. 31, 2011 $55 million preferred equity interest [Member] | Dec. 31, 2011 Prologis NAIF II Secured Mortgage Receivable [Member] | Dec. 31, 2010 Prologis NAIF II Secured Mortgage Receivable [Member] Property | Dec. 31, 2011 Other Notes Receivable [Member] | Dec. 31, 2010 Other Notes Receivable [Member]
Summary of notes receivable backed by real estate |  |  |  |  |  |  |  |  |  |  |  |  |
Investment |  |  | $ 55,000,000 | $ 269,000,000 | $ 4,845,000 |  |  | $ 55,000,000 |  |  |  |  |
Principal payment received |  |  | (2,676,000) |  |  |  |  |  |  | (2,676,000) |  |  |
Accrued interest, (interest payments received), net |  |  | (580,000) |  |  | (1,550,000) |  | 970,000 |  |  |  |  |
Fair value received from exchange |  |  | (10,886,000) |  |  |  |  |  |  |  |  | (10,886,000) |
Impairment |  |  | 20,500,000 |  |  |  |  |  |  |  |  | 20,500,000 |
Impact of changes in foreign currency exchange rates |  |  | 332,000 |  |  |  |  |  |  |  |  | 332,000 |
Ending balance | 322,834,000 | 322,834,000 | 322,834,000 | 302,144,000 |  | 188,000,000 | 189,550,000 | 55,970,000 |  | 78,864,000 | 81,540,000 | 0 | 31,054,000
Preferred equity interest investment in buyer's subsidiary |  |  |  |  |  |  |  |  | 55,000,000 |  |  |  |
Purchased debt securitized by properties | 12 | 12 | 12 |  |  |  |  |  |  |  | 13 |  |
Notes receivable backed by real estate | 322,834,000 | 322,834,000 | 322,834,000 | 302,144,000 |  | 188,000,000 | 189,550,000 | 55,970,000 |  | 78,864,000 | 81,540,000 | 0 | 31,054,000
Percentage of partners interest acquired |  |  |  |  |  |  |  |  |  | 63.00% |  |  |
Loan interest rate |  |  |  |  |  |  |  |  |  |  | 8.00% |  |
Notes Receivable Backed by Real Estate (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Annual rate for the first three years | 7.00% | 7.00% | 7.00% |  |  |  |  |  |  |  |  |  |
Annual rate for the fourth year | 8.00% | 8.00% | 8.00% |  |  |  |  |  |  |  |  |  |
Annual rate for the fifth year | 10.00% | 10.00% | 10.00% |  |  |  |  |  |  |  |  |  |
Minimum period for earning preferred return and partial or full redemption at company's discretion |  | 5 years | 5 years |  |  |  |  |  |  |  |  |  |
Number of properties sold |  | 1 | 1 |  |  |  |  |  |  |  |  |  |
Impairment |  |  | $ (20,500,000) |  |  |  |  |  |  |  |  | $ (20,500,000) |
Number of land parcels exchanged | 3 | 3 | 3 |  |  |  |  |  |  |  |  |  |

X
- Definition Accrued interest, net of interest payments received. + References No definition available. + Details
Name: | pld_AccruedInterestNetOfInterestPaymentsReceived
Namespace Prefix: | pld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Adjustment for effects of foreign currency exchange rate. + References No definition available. + Details
Name: | pld_AdjustmentForEffectsOfForeignCurrencyExchangeRate
Namespace Prefix: | pld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Annual rate for fifth year percentage. + References No definition available. + Details
Name: | pld_AnnualRateForFifthYearPercentage
Namespace Prefix: | pld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Annual rate for first three years percentage. + References No definition available. + Details
Name: | pld_AnnualRateForFirstThreeYearsPercentage
Namespace Prefix: | pld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Annual rate for fourth year percentage. + References No definition available. + Details
Name: | pld_AnnualRateForFourthYearPercentage
Namespace Prefix: | pld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Impairment of notes receivables. + References No definition available. + Details
Name: | pld_ImpairmentOfNotesReceivables
Namespace Prefix: | pld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Investments in notes receivable backed by real estate and advances on other notes receivable. + References No definition available. + Details
Name: | pld_InvestmentsInNotesReceivable
Namespace Prefix: | pld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loan interest rate. + References No definition available. + Details
Name: | pld_LoanInterestRate
Namespace Prefix: | pld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum period for earning preferred return and partial or full redemption at company's discretion. + References No definition available. + Details
Name: | pld_MinimumPeriodForEarningPreferredReturnAndPartialOrFullRedemptionAtCompanysDiscretion
Namespace Prefix: | pld_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net proceeds received from exchange. + References No definition available. + Details
Name: | pld_NetProceedsReceivedFromExchange
Namespace Prefix: | pld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | pld_NotesReceivableBackedByRealEstateTextualAbstract
Namespace Prefix: | pld_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of land parcels exchanged. + References No definition available. + Details
Name: | pld_NumberOfLandParcelsExchanged
Namespace Prefix: | pld_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of properties sold. + References No definition available. + Details
Name: | pld_NumberOfPropertiesSold
Namespace Prefix: | pld_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of partners interest acquired. + References No definition available. + Details
Name: | pld_PercentageOfPartnersInterestAcquired
Namespace Prefix: | pld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Preferred equity interest investment in buyers subsidiary. + References No definition available. + Details
Name: | pld_PreferredEquityInterestInvestmentInBuyersSubsidiary
Namespace Prefix: | pld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Proceeds from collection of secured notes receivable + References No definition available. + Details
Name: | pld_ProceedsFromCollectionOfSecuredNotesReceivable
Namespace Prefix: | pld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Purchased debt securitized by properties. + References No definition available. + Details
Name: | pld_PurchasedDebtSecuritizedByPropertiesNumber
Namespace Prefix: | pld_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total of loans held-for-sale and held-in-portfolio net of unearned income, allowance for loan and lease losses, if any, unamortized loan origination and other fees and costs, and purchased premiums or discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 9 -Section 03 -Paragraph 7 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_LoansReceivableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_LoansReceivableNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration