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v3.19.1

Real Estate - Summary of Acquisition (Parenthetical) (Detail) ft² in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 ft² a Property | Mar. 31, 2018 ft² a Property
Business Acquisition [Line Items] |  |
Number of operating properties | 12 | 0
Square feet | ft² | 967 | 0
Operating Properties [Member] |  |
Business Acquisition [Line Items] |  |
Number of operating properties |  | 0
Acquisitions of Properties from Third Parties [Member] | Land [Member] |  |
Business Acquisition [Line Items] |  |
Square feet | a | 188 | 379

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- Definition Area of real estate properties. + References No definition available. + Details
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Namespace Prefix: | pld_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of real estate properties purchased. + References No definition available. + Details
Name: | pld_NumberOfRealEstatePropertiesPurchased
Namespace Prefix: | pld_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=pld_AcquisitionsFromThirdPartiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |