v2.4.1.9

Unconsolidated Entities - Information About Investments in Co-investment Ventures by Property Funds (Parenthetical) (Detail) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Apr. 30, 2013 USD ($)	Dec. 31, 2014 Prologis Mexico Industrial Fund [Member] USD ($)	Dec. 31, 2014 Prologis Mexico Industrial Fund [Member] MXN	Dec. 31, 2014 Nippon Prologis REIT Inc [Member] USD ($)	Dec. 31, 2014 Nippon Prologis REIT Inc [Member] JPY (¥)	Dec. 31, 2013 Nippon Prologis REIT Inc [Member] USD ($)	Dec. 31, 2013 Property Fund [Member] Prologis Mexico Industrial Fund [Member]	Dec. 31, 2014 Property Fund [Member] Prologis Brazil Logistics Partners Fund and Related Joint Ventures [Member]	Dec. 31, 2013 Property Fund [Member] Prologis Brazil Logistics Partners Fund and Related Joint Ventures [Member]	Dec. 31, 2014 Property Fund [Member] Nippon Prologis REIT Inc [Member]	Dec. 31, 2013 Property Fund [Member] Nippon Prologis REIT Inc [Member]	Dec. 31, 2014 Minimum [Member] Prologis Brazil Logistics Partners Fund and Related Joint Ventures [Member]	Dec. 31, 2014 Maximum [Member] Prologis Brazil Logistics Partners Fund and Related Joint Ventures [Member]
Schedule of Variable Interest Entities for Loans to Commercial Borrowers [Line Items]
Closing price of common stock		$ 41.60us-gaap_SharePrice	$ 1.86us-gaap_SharePrice / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisMexicoIndustrialFundMember	27.29us-gaap_SharePrice / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisMexicoIndustrialFundMember	$ 2,179.00us-gaap_SharePrice / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_NipponPrologisReitIncMember	¥ 260,600.00us-gaap_SharePrice / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_NipponPrologisReitIncMember
Units outstanding			291,100,000us-gaap_PartnersCapitalAccountUnits / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisMexicoIndustrialFundMember	291,100,000us-gaap_PartnersCapitalAccountUnits / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisMexicoIndustrialFundMember	261,310us-gaap_PartnersCapitalAccountUnits / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_NipponPrologisReitIncMember	261,310us-gaap_PartnersCapitalAccountUnits / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_NipponPrologisReitIncMember
Percentage of equity interest holds in unconsolidated joint venture	50.00%pld_PercentageOfEquityInterestHoldsInUnconsolidatedJointVenture
Ownership Percentage in property fund								20.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = pld_PropertyFundMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisMexicoIndustrialFundMember	50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = pld_PropertyFundMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisBrazilLogisticsPartnersFundOneMember	50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = pld_PropertyFundMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisBrazilLogisticsPartnersFundOneMember	15.10%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = pld_PropertyFundMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_NipponPrologisReitIncMember	15.10%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = pld_PropertyFundMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_NipponPrologisReitIncMember	5.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisBrazilLogisticsPartnersFundOneMember	50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisBrazilLogisticsPartnersFundOneMember
Intercompany notes receivable					$ 85.9us-gaap_DueFromRelatedParties / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_NipponPrologisReitIncMember		$ 88.5us-gaap_DueFromRelatedParties / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_NipponPrologisReitIncMember

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