v2.4.1.9

Financial Instruments and Fair Value Measurements - Derivative Activity (Parenthetical) (Detail) | 12 Months Ended | 3 Months Ended
--- | --- | ---
Dec. 31, 2014 USD ($) Option | Dec. 31, 2013 USD ($) Contract | Dec. 31, 2012 USD ($) Contract | Dec. 31, 2013 Prologis European Logistics Partners [Member] USD ($) Contract | Dec. 31, 2013 Nippon Prologis REIT Inc [Member] USD ($) Contract | Dec. 31, 2012 NAIF II [Member] USD ($) Contract | Sep. 30, 2014 Yen Term Loan [Member] JPY (¥) Contract
Derivative [Line Items] |  |  |  |  |  |  |
Number of option exercised | 3 pld_NumberOfOptionsExercised |  |  |  |  |  |
Number of contracts |  |  |  |  |  |  | 2 pld_NumberOfContracts / us-gaap_DebtInstrumentAxis = pld_JapaneseYenNoteMember
Net gain from option exercised | $ 1,100,000 us-gaap_FairValueOptionChangesInFairValueGainLoss1 |  |  |  |  |  |
Notional value of swap contracts contributed |  |  |  | 13 pld_NumberOfInterestRateSwapContractsContributed / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisEuropeanLogisticsPartnersMember |  |  |
Number of swap contracts |  | 13 pld_NumberOfInterestRateSwapContractsSettled | 4 pld_NumberOfInterestRateSwapContractsSettled |  | 5 pld_NumberOfInterestRateSwapContractsSettled / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_NipponPrologisReitIncMember | 1 pld_NumberOfInterestRateSwapContractsSettled / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisNorthAmericanIndustrialFundTwoMember |
Notional value of swap contracts |  | $ 333,500,000 invest_DerivativeNotionalAmount | $ 445,400,000 invest_DerivativeNotionalAmount | $ 383,900,000 invest_DerivativeNotionalAmount / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisEuropeanLogisticsPartnersMember | $ 526,400,000 invest_DerivativeNotionalAmount / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_NipponPrologisReitIncMember | $ 71,000,000 invest_DerivativeNotionalAmount / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pld_PrologisNorthAmericanIndustrialFundTwoMember | ¥ 40,900,000,000 invest_DerivativeNotionalAmount / us-gaap_DebtInstrumentAxis = pld_JapaneseYenNoteMember
Maturity date of interest rate swap contracts |  |  | Various expiration dates between 2017 and 2019 |  |  |  |

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Maturity Date Of Interest Rate Swap + References No definition available. + Details
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- Definition Number of contracts. + References No definition available. + Details
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- Definition Number Of Interest Rate Swap Contracts Contributed + References No definition available. + Details
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- Definition Number Of Interest Rate Swap Contracts Settled + References No definition available. + Details
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- Definition Number Of Options Exercised + References No definition available. + Details
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- Details
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- Definition For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 + Details
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