Stockholders' Equity of Prologis, Inc - Summary of Taxability of Common and Preferred Stock Dividends (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2018	[1]	Dec. 31, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Ordinary income	$ 1.34		$ 1.23	$ 0.60
Qualified dividend	0.03		0.01	0.15
Capital gains	0.55		0.52	0.93
Total distribution	1.92		1.76	1.68
Series Q Preferred Stock [Member]
Class of Stock [Line Items]
Ordinary income	2.98		2.91	2.02
Qualified dividend	0.06		0.08	0.29
Capital gains	1.23		1.28	1.96
Total distribution	$ 4.27		$ 4.27	$ 4.27

[1] Taxability for 2018 is estimated.