Stockholders' Equity of Prologis Inc. - Additional Information (Detail)		3 Months Ended	12 Months Ended
	Apr. 30, 2013 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) Agent $ / shares shares	Dec. 31, 2014 USD ($) Agent $ / shares shares	Dec. 31, 2013 USD ($) shares
Shareholders Equity [Line Items]
Common stock shares authorized to be issued			1,100,000,000
Common stock, shares authorized			1,000,000,000
Common stock, shares issued	35,650,000
Closing price of common stock | $ / shares	$ 41.60
Net proceeds from public offering | $	$ 1,400,000,000
Liquidation preference per share | $ / shares		$ 50	$ 50	$ 50
Preferred stock, par value | $ / shares		$ 0.01	$ 0.01	$ 0.01
Repurchase of preferred stock, shares		435,000		435,000
Redemption Premium of Preferred Stock | $			$ 0	$ 6,517,000	$ 9,108,000
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]
Liquidation preference per share | $ / shares		$ 50	$ 50	$ 50
Preferred stock, par value | $ / shares		$ 0.01	$ 0.01	$ 0.01
Preferred stock dividend rate percentage			8.54%	8.54%
Common Stock [Member]
Shareholders Equity [Line Items]
Common stock, shares issued			1,662,000	3,316,000	35,650,000
Shares issued upon exercise of warrant				6,000,000
Norges Bank Investment Management [Member]
Shareholders Equity [Line Items]
Proceeds from exercise of warrant | $		$ 213,800,000		$ 213,800,000
Norges Bank Investment Management [Member] | Common Stock [Member]
Shareholders Equity [Line Items]
Shares issued upon exercise of warrant				6,000,000
2012 Long Term Incentive Plan [Member]
Shareholders Equity [Line Items]
Gross proceeds received for the issuance of common stock | $			$ 18,200,000	$ 25,800,000	$ 22,400,000
At the Market Offering [Member]
Shareholders Equity [Line Items]
Common stock, shares issued			1,700,000	3,300,000
Net proceeds from issuance of common stock | $			$ 71,500,000	$ 140,100,000
Number of designated agents | Agent			6	2
Maximum proceeds from sale of stock | $			$ 750,000,000
Aggregate sales of stock remaining available | $			$ 535,200,000
Agents fee percentage			2.00%