v2.4.1.9

Real Estate - Additional Information (Detail) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended	12 Months Ended			12 Months Ended				6 Months Ended				3 Months Ended
	Mar. 31, 2013 USD ($)	Jun. 30, 2014 USD ($) sqft	Dec. 31, 2014 sqft	Dec. 31, 2013 sqft	Dec. 31, 2012 sqft	Dec. 31, 2014 Operating Lease Revenue Largest Customer [Member]	Dec. 31, 2014 Operating Lease Revenue Twenty Five Largest Customers [Member]	Dec. 31, 2014 Minimum [Member]	Dec. 31, 2014 Maximum [Member]	Jun. 30, 2014 Fibra Prologis [Member] USD ($) Property sqft	Jun. 30, 2014 Fibra Prologis [Member] MXN Property	Jun. 30, 2014 Mexico Fondo Logistico Afores [Member] sqft	Jun. 30, 2014 Prologis Mexico Industrial Fund [Member] sqft	Mar. 31, 2013 Nippon Prologis REIT Inc [Member] USD ($) Property sqft	Mar. 31, 2013 Nippon Prologis REIT Inc [Member] JPY (¥) sqft	Mar. 31, 2013 Prologis European Logistics Partners [Member] USD ($) Property Markets sqft	Mar. 31, 2013 Prologis European Logistics Partners [Member] EUR (€) sqft	Mar. 31, 2013 Norges Bank Investment Management [Member] USD ($)	Mar. 31, 2013 Norges Bank Investment Management [Member] Common Stock [Member]
Real Estate Properties [Line Items]
Number of properties purchased										177pld_NumberOfRealEstatePropertiesPurchased / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_FibraMember	177pld_NumberOfRealEstatePropertiesPurchased / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_FibraMember			12pld_NumberOfRealEstatePropertiesPurchased / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NipponPrologisReitIncMember	12pld_NumberOfRealEstatePropertiesPurchased / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NipponPrologisReitIncMember	195pld_NumberOfRealEstatePropertiesPurchased / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_PrologisEuropeanLogisticsPartnersMember	195pld_NumberOfRealEstatePropertiesPurchased / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_PrologisEuropeanLogisticsPartnersMember
Square footage of properties		12,600,000us-gaap_AreaOfRealEstateProperty	260,700,000us-gaap_AreaOfRealEstateProperty	264,300,000us-gaap_AreaOfRealEstateProperty	208,800,000us-gaap_AreaOfRealEstateProperty					29,700,000us-gaap_AreaOfRealEstateProperty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_FibraMember	29,700,000us-gaap_AreaOfRealEstateProperty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_FibraMember	7,600,000us-gaap_AreaOfRealEstateProperty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_MexicoFondoLogisticoAforesMember	9,500,000us-gaap_AreaOfRealEstateProperty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_PrologisMexicoIndustrialFundMember	9,600,000us-gaap_AreaOfRealEstateProperty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NipponPrologisReitIncMember	9,600,000us-gaap_AreaOfRealEstateProperty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NipponPrologisReitIncMember	48,700,000us-gaap_AreaOfRealEstateProperty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_PrologisEuropeanLogisticsPartnersMember	48,700,000us-gaap_AreaOfRealEstateProperty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_PrologisEuropeanLogisticsPartnersMember
Equity Units received in exchange of combined investments										287.3pld_EquityMethodInvestmentNumberOfSharesReceived / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_FibraMember	287.3pld_EquityMethodInvestmentNumberOfSharesReceived / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_FibraMember
Ownership interest accounted under equity method										45.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_FibraMember	45.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_FibraMember
Equity units trading value (per share)										$ 2.09us-gaap_SaleOfStockPricePerShare / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_FibraMember	27.00us-gaap_SaleOfStockPricePerShare / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_FibraMember
Gain recognized on disposition of investments in real estate	$ 1,800,000us-gaap_GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	$ 52,500,000us-gaap_GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee												$ 337,900,000us-gaap_GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NipponPrologisReitIncMember
Tax expense recognized on disposition of investments in real estate		32,400,000pld_EquityMethodInvestmentIncomeTaxExpense
Deferred tax benefit recognized on disposition of investments in real estate		55,500,000us-gaap_SubsidiaryOrEquityMethodInvesteeDeferredIncomeTaxProvisionOnCumulativeGainLossRecognizedAmount												59,600,000us-gaap_SubsidiaryOrEquityMethodInvesteeDeferredIncomeTaxProvisionOnCumulativeGainLossRecognizedAmount / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NipponPrologisReitIncMember
Earnings attributable to non controlling interest		61,000,000us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
Aggregate purchase price														1,900,000,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NipponPrologisReitIncMember	173,000,000,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NipponPrologisReitIncMember
Purchase price of portfolio																3,000,000,000pld_RealEstatePropertySalePrice / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_PrologisEuropeanLogisticsPartnersMember	2,300,000,000pld_RealEstatePropertySalePrice / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_PrologisEuropeanLogisticsPartnersMember
Number of target European Global markets																11pld_NumberOfMarkets / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_PrologisEuropeanLogisticsPartnersMember	11pld_NumberOfMarkets / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_PrologisEuropeanLogisticsPartnersMember
Common Stock Issued In Exercise Of Warrants Per Share																		$ 35.64us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NorgesBankInvestmentManagementMember
Proceeds from exercise of warrant																		$ 213,800,000us-gaap_ProceedsFromWarrantExercises / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NorgesBankInvestmentManagementMember
Shares issued upon exercise of warrants																			6pld_StockIssuedDuringPeriodSharesExerciseOfWarrantShares / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = pld_NorgesBankInvestmentManagementMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Operating leases lease term								1 year	75 years
Net effective rent from 25 largest customers						1.90%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = pld_OperatingLeaseRevenueLargestCustomerMember	19.50%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = pld_OperatingLeaseRevenueTwentyFiveLargestCustomerMember
Minimum lease payments on leases periods			Greater than one year

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Number Of Markets

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Number of Real Estate Properties Purchased

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Real Estate Property Sale Price

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Area of a real estate property.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Exercise price per share or per unit of warrants or rights outstanding.

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Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries or equity method investee.

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The amount provided for deferred income taxes in relation to any gain (loss) recognized in income of the entity resulting from the issuance of shares by a subsidiary or equity method investee.

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