v2.4.1.9

Long-Term Compensation - Additional Information (Detail) (USD $) | 12 Months Ended | 3 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2014 | Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Performance period used for fair value assumption | 3 years |  |  |  |
Stock option outstanding and exercisable | 5,300,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber |  |  | 5,300,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber |
Weighted average exercise price | $ 34.80 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice |  |  | $ 34.80 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice |
Weighted average life | 3 years 9 months 18 days |  |  |  |
Aggregate intrinsic value of exercised options | $ 5,800,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue | $ 9,600,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue | $ 21,300,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue |  |
Percentage of employees annual compensation within the statutory compensation limit | 6.00%pld_DefinedContributionPlanMaximumContributionsPercentageByEmployer |  |  |  |
Vesting percentage on defined contribution plan | 100.00%pld_VestingPercentageOnDefinedContributionPlan |  |  |  |
Vesting period for acquired plan | 1 year |  |  |  |
Employer contribution for every dollar | 0.50 pld_DefinedContributionPlanContributionsByEmployer |  |  |  |
Compensation cost related to employees contribution plans | 2,200,000 us-gaap_DefinedContributionPlanCostRecognized | 2,100,000 us-gaap_DefinedContributionPlanCostRecognized | 1,800,000 us-gaap_DefinedContributionPlanCostRecognized |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Outperformance hurdle, above MSCI US REIT Index | 1.00%pld_PercentageAddedToEarnedAmountUnderPlan / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  |  |
Compensation pool as percentage of excess value, if outperformance hurdle is met | 3.00%pld_PercentageOfCompensationPoolOverExcessValueUnderPlan / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  |  |
Cash incentive award maximum | 75,000,000 pld_CashIncentivesAwardsGrantedAmountMaximum / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  |  |
Percentage of equity market capitalization | 0.50%pld_PercentageOfMarketCapitalizationProvidedToParticipantsOfPlan / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  |  |
Forfeited awards after seven years | 7 years |  |  |  |
RSUs and LTIP Units vesting period | 3 years |  |  |  |
Compensation cost | 52,400,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  | 52,400,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |
Remaining weighted average period | 1 year 4 months 24 days |  |  |  |
Restricted Operating Partnership Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Amount realized during conversion of prior held shares | 113,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = pld_RestrictedOperatingPartnershipUnitsMember |  |  |  |
Compensation cost | 4,200,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = pld_RestrictedOperatingPartnershipUnitsMember |  |  | 4,200,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = pld_RestrictedOperatingPartnershipUnitsMember |
Remaining weighted average period | 1 year 10 months 24 days |  |  |  |
Vesting period for Restricted Operating Partnership Units | 3 years |  |  |  |
2012 Long Term Incentive Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of common stocks are reserved for issuance | 27,200,000 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_PlanNameAxis = pld_TwoThousandTwelveLongTermIncentivePlanMember |  |  | 27,200,000 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_PlanNameAxis = pld_TwoThousandTwelveLongTermIncentivePlanMember |
Common stock available for future issuance | 23,100,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = pld_TwoThousandTwelveLongTermIncentivePlanMember |  |  | 23,100,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = pld_TwoThousandTwelveLongTermIncentivePlanMember |
Common stock, conversion basis | Each LTIP Unit counts as one share of common stock |  |  |  |
2012 Long Term Incentive Plan [Member] | Maximum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares available to be granted for a single participant | 1,500,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_PlanNameAxis = pld_TwoThousandTwelveLongTermIncentivePlanMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |
2012 Long Term Incentive Plan [Member] | Restricted Operating Partnership Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Amount realized during conversion of prior held shares | 2,800,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = pld_RestrictedOperatingPartnershipUnitsMember / us-gaap_PlanNameAxis = pld_TwoThousandTwelveLongTermIncentivePlanMember |  |  |  |
Prologis Promote Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Total compensation pool | 40.00%pld_PercentageOfActualPromotesReceivedUnderCompensationPool / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember |  |  |  |
RSUs and LTIP Units vesting period | 3 years |  |  |  |
Total value of awards | 11,300,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember | 5,300,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember |  | 11,300,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember | 5,300,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember
Total value of awards, settled in cash |  |  |  | 4,200,000 pld_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsSettledInCash / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember | 2,700,000 pld_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsSettledInCash / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember
Prologis Promote Plan [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Amount realized during conversion of prior held shares |  |  |  | 57,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember | 69,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember
Aggregate fair value |  |  |  | 2,400,000 pld_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember | 2,600,000 pld_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember
Prologis Promote Plan [Member] | Limited Partnership Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Amount realized during conversion of prior held shares |  |  |  | 113,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = pld_LimitedPartnershipUnitsMember / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember |
Aggregate fair value |  |  |  | $ 4,700,000 pld_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateGrantDateFairValue / us-gaap_AwardTypeAxis = pld_LimitedPartnershipUnitsMember / us-gaap_PlanNameAxis = pld_PrologisPromotePlanMember |
Out-Performance Plan [Member] | Restricted Operating Partnership Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share based compensation award under plan | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = pld_RestrictedOperatingPartnershipUnitsMember / us-gaap_PlanNameAxis = pld_OutperformancePlanMember |  |  |  |

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- Definition Describe the conversion features of common stock if such stock is convertible. That is, shares of common stock into which another convertible security was converted, or shares of common stock into which another class of common stock was converted. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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