Stockholders' Equity of Prologis Inc. - Additional Information (Detail) $ / shares in Units, $ in Thousands	1 Months Ended		9 Months Ended
	Aug. 31, 2020 USD ($) shares	May 31, 2020 USD ($) Agent shares	Sep. 30, 2020 USD ($) $ / shares shares	Apr. 30, 2020 shares	Mar. 31, 2020 shares
Shareholders Equity [Line Items]
Aggregate price of shares repurchased and retired | $			$ 34,829
Series Q Preferred Stock [Member]
Shareholders Equity [Line Items]
Repurchased shares	100,000
Recognized loss | $	$ 2,300
At the Market Offering [Member]
Shareholders Equity [Line Items]
Maximum proceeds from sale of stock | $		$ 1,500,000
Number of designated agents | Agent		20
Agents fee percentage		2.00%
Equity issued		0
Common Stock [Member]
Shareholders Equity [Line Items]
Repurchase and retire of common stock shares			539,000
Aggregate price of shares repurchased and retired | $			$ 5
Weighted average purchase price | $ / shares			$ 64.66
Common Stock [Member] | Maximum [Member]
Shareholders Equity [Line Items]
Aggregate purchase price of common stock					1,000,000,000.0
Common stock, shares authorized				2,000,000,000.0
Common Stock [Member] | Minimum [Member]
Shareholders Equity [Line Items]
Common stock, shares authorized				1,000,000,000.0