Noncontrolling Interests - Noncontrolling Interest Summary (Parenthetical) (Detail) $ in Billions	1 Months Ended	12 Months Ended
	Jan. 31, 2020 USD ($) ft² Property	Dec. 31, 2020 shares	Dec. 31, 2019 shares	Dec. 31, 2018 shares	Dec. 31, 2017 shares
Class A Common [Member]
Noncontrolling Interest [Line Items]
Class A units convertible into common limited partnership units		8,000,000.0	8,100,000
Units outstanding			8,600,000
Common Unit [Member]
Noncontrolling Interest [Line Items]
Class A units convertible into common limited partnership units		8,200,000	6,200,000
Common Stock [Member]
Noncontrolling Interest [Line Items]
Issuance of units related to acquisitions, shares		106,723,000
Other Consolidated Entities [Member]
Noncontrolling Interest [Line Items]
Class A units convertible into common limited partnership units		300,000	300,000
Other Consolidated Entities [Member] | Common Stock [Member]
Noncontrolling Interest [Line Items]
Outstanding limited partnership units		300,000	300,000
Prologis, L.P. [Member] | Class A Common [Member] | Limited Partners [Member]
Noncontrolling Interest [Line Items]
Units outstanding		8,595,000	8,613,000	8,849,000	8,894,000
Prologis, L.P. [Member] | Common [Member] | Limited Partners [Member]
Noncontrolling Interest [Line Items]
Units outstanding		12,142,000	9,933,000	10,516,000	5,656,000
Issuance of units related to acquisitions, shares		461,000
Partial consideration for the acquisition of other properties		500,000	0
Prologis, L.P. [Member] | Common [Member] | Limited Partners [Member] | Liberty Transaction [Member]
Noncontrolling Interest [Line Items]
Issuance of units related to acquisitions, shares		2,300,000	0
Prologis U S Logistics Venture [Member]
Noncontrolling Interest [Line Items]
Number of operating properties acquired | Property	127
Square feet of properties | ft²	19.0
Business acquisition consideration transferred | $	$ 2.0