v2.4.1.9
Financial Instruments and Fair Value Measurements - Summary of Gains (Losses) From Change in Fair Value of Derivative Instruments Included in Other Comprehensive Income (Loss) (Parenthetical) (Detail)
 12 Months Ended
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Dec. 31, 2014
Net investment hedges [Member]
USD ($)
Dec. 31, 2013
Net investment hedges [Member]
USD ($)
Dec. 31, 2012
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
USD ($)
Dec. 31, 2014
Foreign Currency Forward Contracts [Member]
USD ($)
Dec. 31, 2014
Foreign Currency Forward Contracts [Member]
EUR (€)
Dec. 31, 2013
Foreign Currency Forward Contracts [Member]
USD ($)
Dec. 31, 2014
Foreign Currency Forward Contracts [Member]
Operating Partnership [Member]
USD ($)
Dec. 31, 2014
Foreign Currency Forward Contracts [Member]
Operating Partnership [Member]
EUR (€)
Dec. 31, 2013
Designated as Hedging Instrument [Member]
Foreign Currency Forward Contracts [Member]
EUR (€)
Dec. 31, 2014
Designated as Hedging Instrument [Member]
Foreign Currency Forward Contracts [Member]
Operating Partnership [Member]
USD ($)
Dec. 31, 2014
Designated as Hedging Instrument [Member]
Foreign Currency Forward Contracts [Member]
Operating Partnership [Member]
EUR (€)
Accumulated Other Comprehensive Income (Loss) [Line Items]                            
Gain (Loss) on settlement of derivatives       $ 6,300,000us-gaap_GainLossOnSaleOfDerivatives
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember		 $ 4,300,000us-gaap_GainLossOnSaleOfDerivatives
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember		                  
Interest expense reclassified 308,885,000us-gaap_InterestExpense 379,327,000us-gaap_InterestExpense 505,215,000us-gaap_InterestExpense     14,700,000us-gaap_InterestExpense
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember		                
Debt issued 9,293,000,000us-gaap_DebtInstrumentFaceAmount           3,000,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_ForwardContractsMember		 2,500,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_ForwardContractsMember		 1,000,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_ForwardContractsMember		 2,400,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= pld_OperatingPartnershipMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_ForwardContractsMember		 1,800,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= pld_OperatingPartnershipMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_ForwardContractsMember		 700,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 118,500,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= pld_OperatingPartnershipMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 97,600,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= pld_OperatingPartnershipMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Amount of gain (loss) included in AOCI $ (171,401,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax $ (234,680,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax $ (79,014,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax       $ 7,500,000us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
/ us-gaap_DerivativeByNatureAxis
= us-gaap_ForwardContractsMember