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Real Estate and Accumulated Depreciation (Parenthetical) (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]      
Balance at beginning of year $ 18,822,081,000us-gaap_RealEstateGrossAtCarryingValue $ 23,559,891,000us-gaap_RealEstateGrossAtCarryingValue $ 22,413,079,000us-gaap_RealEstateGrossAtCarryingValue
Total per Schedule III 20,109,432,000us-gaap_RealEstateGrossAtCarryingValue 18,822,081,000us-gaap_RealEstateGrossAtCarryingValue 23,559,891,000us-gaap_RealEstateGrossAtCarryingValue
Acquisitions of operating properties, improvements to operating properties, development activity, transfers of land to CIP and net effect of changes in foreign exchange rates and other 3,595,836,000us-gaap_RealEstateAcquisitionsThroughForeclosures 2,050,810,000us-gaap_RealEstateAcquisitionsThroughForeclosures 2,881,005,000us-gaap_RealEstateAcquisitionsThroughForeclosures
Land 1,577,786,000us-gaap_LandAvailableForDevelopment    
Basis of operating properties disposed of (2,713,300,000)pld_BasisOfOperatingPropertiesDisposed (6,857,994,000)pld_BasisOfOperatingPropertiesDisposed (1,630,764,000)pld_BasisOfOperatingPropertiesDisposed
Other real estate investments 502,927,000us-gaap_RealEstateOtherAdditions    
Change in the development portfolio balance, including the acquisition of properties 452,963,000pld_RealEstatePeriodIncreaseDecreaseUnderDevelopmentBalance 69,374,000pld_RealEstatePeriodIncreaseDecreaseUnderDevelopmentBalance 91,112,000pld_RealEstatePeriodIncreaseDecreaseUnderDevelopmentBalance
Total per consolidated balance sheet 22,190,145,000us-gaap_RealEstateInvestmentPropertyAtCost 20,824,477,000us-gaap_RealEstateInvestmentPropertyAtCost  
Impairment of real estate properties     (194,541,000)pld_ImpairmentOfRealEstatePropertiesExcludingLand
Total accumulated depreciation per Schedule III 2,748,835,000us-gaap_RealEstateAccumulatedDepreciation 2,540,267,000us-gaap_RealEstateAccumulatedDepreciation 2,460,642,000us-gaap_RealEstateAccumulatedDepreciation
Assets transferred to held-for-sale (48,148,000)pld_AssetsTransferredToHeldForSale    
Accumulated depreciation on other real estate investments 41,946,000pld_AccumulatedDepreciationOnOtherRealEstateInvestments    
Balance at end of year 20,109,432,000us-gaap_RealEstateGrossAtCarryingValue 18,822,081,000us-gaap_RealEstateGrossAtCarryingValue 23,559,891,000us-gaap_RealEstateGrossAtCarryingValue
Total per consolidated balance sheet 2,790,781,000us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation 2,568,998,000us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation  
Balance at beginning of year 2,540,267,000us-gaap_RealEstateAccumulatedDepreciation 2,460,642,000us-gaap_RealEstateAccumulatedDepreciation 2,150,713,000us-gaap_RealEstateAccumulatedDepreciation
Aggregate cost for Federal tax purposes 14,000,000,000us-gaap_RealEstateFederalIncomeTaxBasis    
Depreciation expense 490,298,000us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense 505,691,000us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense 665,239,000us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense
Balances retired upon disposition of operating properties and net effect of changes in foreign exchange rates and other (277,516,000)us-gaap_RealEstateAccumulatedDepreciationRealEstateSold (426,066,000)us-gaap_RealEstateAccumulatedDepreciationRealEstateSold (355,310,000)us-gaap_RealEstateAccumulatedDepreciationRealEstateSold
Amount secured of mortgage notes 4,500,000,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances    
Assets transferred to held-for-sale (4,214,000)pld_RealEstateAccumulatedDepreciationAssetsTransferredToHeldForSale    
Mortgage notes 2,300,000,000pld_PropertiesCollateralForNotes    
Balance at end of year 2,748,835,000us-gaap_RealEstateAccumulatedDepreciation 2,540,267,000us-gaap_RealEstateAccumulatedDepreciation 2,460,642,000us-gaap_RealEstateAccumulatedDepreciation
Assessment bonds 15,500,000pld_SecuredAssessmentBonds    
Assessment bonds, aggregate undepreciated cost $ 783,400,000pld_PropertiesCollateralForAssessmentBonds    
Standard Tenant Improvements [Member]      
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]      
Useful lives for real estate assets 10 years    
Land improvements on developed buildings [Member]      
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]      
Useful lives for real estate assets 25 years    
Acquired Industrial Properties [Member]      
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]      
Useful lives for real estate assets 30 years    
Properties Developed [Member]      
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]      
Useful lives for real estate assets 40 years    
Minimum [Member] | Capital Improvements [Member]      
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]      
Useful lives for real estate assets 5 years    
Maximum [Member] | Capital Improvements [Member]      
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]      
Useful lives for real estate assets 7 years