v2.4.1.9

Business Combinations - Additional Information (Detail) (USD $)	12 Months Ended						0 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Oct. 20, 2014	Oct. 02, 2013	Jan. 31, 2014	Aug. 06, 2013 Property
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items]
Equity method investment	$ 4,666,000,000us-gaap_EquityMethodInvestments	[1]	$ 4,250,000,000us-gaap_EquityMethodInvestments	[1]	$ 2,014,000,000us-gaap_EquityMethodInvestments	[1]
Gains on dispositions of investments in real estate and revaluation of equity investments upon acquisition of a controlling interest, net	725,790,000pld_NetGainLossOnDispositionsNetOfInvestmentsInRealEstateAndRevaluationOfEquityInvestmentsUponAcquisitionOfControllingInterest		715,758,000pld_NetGainLossOnDispositionsNetOfInvestmentsInRealEstateAndRevaluationOfEquityInvestmentsUponAcquisitionOfControllingInterest		348,615,000pld_NetGainLossOnDispositionsNetOfInvestmentsInRealEstateAndRevaluationOfEquityInvestmentsUponAcquisitionOfControllingInterest
Prologis SGP Mexico [Member]
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items]
Ownership interest in the venture, percentage								78.40%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = pld_PrologisSgpMexicoMember
Business acquisition purchase price allocation real estate properties								409,500,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand / us-gaap_BusinessAcquisitionAxis = pld_PrologisSgpMexicoMember
Business acquisition purchase price allocation other assets								4,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther / us-gaap_BusinessAcquisitionAxis = pld_PrologisSgpMexicoMember
Business acquisition purchase price allocation other liabilities								158,400,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther / us-gaap_BusinessAcquisitionAxis = pld_PrologisSgpMexicoMember
Prologis North American Industrial Fund [Member]
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items]
Equity method investment	679,000,000us-gaap_EquityMethodInvestments / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundMember
Total purchase price	1,082,520,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundMember						46,800,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundMember
Gains on dispositions of investments in real estate and revaluation of equity investments upon acquisition of a controlling interest, net	201,300,000pld_NetGainLossOnDispositionsNetOfInvestmentsInRealEstateAndRevaluationOfEquityInvestmentsUponAcquisitionOfControllingInterest / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundMember
Rental income included in pro forma result	49,200,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundMember
Rental expenses included in pro forma result	13,300,000pld_RentalExpensesIncludedInProFormaResults / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundMember
Prologis North American Industrial Fund [Member] | Minimum [Member]
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items]
Equity method investment, percentage	23.10%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Prologis North American Industrial Fund [Member] | Maximum [Member]
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items]
Equity method investment, percentage	66.10%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Unconsolidated Co-investment Ventures [Member]
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items]
Gains on dispositions of investments in real estate and revaluation of equity investments upon acquisition of a controlling interest, net			34,800,000pld_NetGainLossOnDispositionsNetOfInvestmentsInRealEstateAndRevaluationOfEquityInvestmentsUponAcquisitionOfControllingInterest / us-gaap_BusinessAcquisitionAxis = pld_UnconsolidatedJointVenturesMember
Number of unconsolidated Co-investment Ventures			3pld_NumberOfUnconsolidatedJointVentures / us-gaap_BusinessAcquisitionAxis = pld_UnconsolidatedJointVenturesMember
Prologis North American Industrial Fund III [Member]
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items]
Ownership interest in the venture, percentage										80.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundThreeMember
Business acquisition purchase price allocation real estate properties										519,200,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundThreeMember
Business acquisition purchase price allocation other assets										22,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundThreeMember
Number of properties sold										73pld_NumberOfRealEstatePropertiesSold / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundThreeMember
Ownership percentage in joint venture									55.00%pld_OwnershipPercentageInJointVenture / us-gaap_BusinessAcquisitionAxis = pld_PrologisNorthAmericanIndustrialFundThreeMember
Our Share of Derivatives from Unconsolidated Co-Investment Ventures [Member]
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items]
Gains on dispositions of investments in real estate and revaluation of equity investments upon acquisition of a controlling interest, net					286,300,000pld_NetGainLossOnDispositionsNetOfInvestmentsInRealEstateAndRevaluationOfEquityInvestmentsUponAcquisitionOfControllingInterest / us-gaap_BusinessAcquisitionAxis = pld_UnconsolidatedCoInvestmentVenturesMember
Rental income included in pro forma result					170,600,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = pld_UnconsolidatedCoInvestmentVenturesMember
Rental expenses included in pro forma result					42,500,000pld_RentalExpensesIncludedInProFormaResults / us-gaap_BusinessAcquisitionAxis = pld_UnconsolidatedCoInvestmentVenturesMember
Number of unconsolidated Co-investment Ventures					3pld_NumberOfUnconsolidatedJointVentures / us-gaap_BusinessAcquisitionAxis = pld_UnconsolidatedCoInvestmentVenturesMember
Business acquisition purchase price allocation real estate properties					2,300,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand / us-gaap_BusinessAcquisitionAxis = pld_UnconsolidatedCoInvestmentVenturesMember
Business acquisition purchase price allocation other assets					50,300,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther / us-gaap_BusinessAcquisitionAxis = pld_UnconsolidatedCoInvestmentVenturesMember
Business acquisition purchase price allocation other liabilities					$ 1,000,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther / us-gaap_BusinessAcquisitionAxis = pld_UnconsolidatedCoInvestmentVenturesMember
[1] The difference between our ownership interest of the venture's equity and our investment balance results principally from three types of transactions: (i) deferring a portion of the gains we recognize from a contribution of a property to the venture ($322.9 million, $139.6 million and $147.9 million at December 31, 2014, 2013 and 2012, respectively); (ii) recording additional costs associated with our investment in the venture; and (iii) advances to the venture.

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Net Gain Loss On Dispositions Net Of Investments In Real Estate And Revaluation Of Equity Investments Upon Acquisition Of Controlling Interest

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Number Of Unconsolidated Joint Ventures

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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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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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of real estate acquired, at the acquisition date.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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