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Real Estate - Summary of Acquisition (Detail) ft² in Thousands, $ in Thousands | 3 Months Ended
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Mar. 31, 2019 USD ($) ft² Property | Mar. 31, 2018 USD ($) ft² Property
Real Estate [Abstract] |  |
Number of operating properties | Property | 12 | 0
Square feet | ft² | 967 | 0
Acquisition value of net investments in real estate properties | $ | $ 312,252 | $ 134,941

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

X
- 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

X
- Definition Real estate acquisition value acquired during period. + References No definition available. + Details
Name: | pld_RealEstateAcquisitionValueAcquiredDuringPeriod
Namespace Prefix: | pld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RealEstateAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration