Real Estate - Summary of Dispositions (Parenthetical) (Detail)	1 Months Ended	3 Months Ended
	Jan. 31, 2019 ft² a Property	Mar. 31, 2019 ft² Property	Mar. 31, 2018 ft²	Dec. 31, 2018 Property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square feet | ft²		967,000	0
Unconsolidated Co-Investment Ventures [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of operating properties contributed | Property		1,591		1,569
Prologis Brazil Logistics Venture [Member] | Unconsolidated Co-Investment Ventures [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of operating properties contributed | Property	14
Square feet | ft²	6.9
Ownership Percentage in property fund	20.00%
Prologis Brazil Logistics Venture [Member] | Unconsolidated Co-Investment Ventures [Member] | Land [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square feet | a	371