Noncontrolling Interests - Noncontrolling Interest Summary (Parenthetical) (Detail) shares in Thousands, ft² in Millions, $ in Billions	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Jan. 31, 2020 USD ($) ft² Property	Sep. 30, 2020 shares	Sep. 30, 2020 shares	Dec. 31, 2019 shares	Jun. 30, 2020 shares	Sep. 30, 2019 shares	Jun. 30, 2019 shares	Dec. 31, 2018 shares
Industrial Property Trust, Inc. [Member] | Prologis U S Logistics Venture
Noncontrolling Interest [Line Items]
Number of operating properties acquired | Property	127
Square feet of properties | ft²	19.0
Business acquisition consideration transferred | $	$ 2.0
Class A Common [Member]
Noncontrolling Interest [Line Items]
Outstanding limited partnership units, exchanged			8,000	8,100
Units outstanding				8,600
Common Unit [Member]
Noncontrolling Interest [Line Items]
Outstanding limited partnership units, exchanged			8,600	6,200
Common Stock [Member]
Noncontrolling Interest [Line Items]
Liberty Transaction, net of issuance costs, shares			106,723
Other Consolidated Entities [Member]
Noncontrolling Interest [Line Items]
Outstanding limited partnership units, exchanged			300	300
Other Consolidated Entities [Member] | Common Stock [Member]
Noncontrolling Interest [Line Items]
Outstanding limited partnership units		300	300	300
Prologis, L.P. [Member] | Class A Common [Member] | Limited Partners [Member]
Noncontrolling Interest [Line Items]
Units outstanding		8,595	8,595	8,613	8,608	8,613	8,849	8,849
Prologis, L.P. [Member] | Common [Member] | Limited Partners [Member]
Noncontrolling Interest [Line Items]
Units outstanding		12,494	12,494	9,933	12,914	9,969	10,402	10,516
Liberty Transaction, net of issuance costs, shares		461	461
Partial consideration for the acquisition of other properties			500
Prologis, L.P. [Member] | Common [Member] | Liberty Transaction [Member] | Limited Partners [Member]
Noncontrolling Interest [Line Items]
Liberty Transaction, net of issuance costs, shares			2,300