Stockholders' Equity of Prologis Inc. - Additional Information (Detail)		12 Months Ended
	Aug. 22, 2018 shares	Dec. 31, 2019 USD ($) Agent shares	Dec. 31, 2018 shares
Shareholders Equity [Line Items]
Common stock shares authorized to be issued		1,100,000,000
Common stock, shares authorized		1,000,000,000.0
Beneficial interest of outstanding shares		50.00%
Beneficial interest of outstanding shares by single person or persons acting as group		9.80%
Percentage of ownership restrictions		25.00%
Percentage of REIT taxable income computed without regard to the dividends paid deduction and net capital gains		90.00%
Series Q Preferred Stock [Member]
Shareholders Equity [Line Items]
Preferred stock dividend rate percentage		8.54%	8.54%
At the Market Offering [Member]
Shareholders Equity [Line Items]
Maximum proceeds from sale of stock | $		$ 750,000,000
Aggregate sales of stock remaining available | $		$ 535,200,000
Agents fee percentage		2.00%
Number of designated agents | Agent		6
Common Stock [Member]
Shareholders Equity [Line Items]
Issuance of common shares related to acquisition			96,179,000
DCT Transaction [Member] | Common Stock [Member]
Shareholders Equity [Line Items]
Issuance of common shares related to acquisition	96,200,000