Stockholders' Equity of Prologis, Inc - Summary of Taxability of Common and Preferred Stock Dividends (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2019	[1]	Dec. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Ordinary income	$ 2.08		$ 1.34	$ 1.23
Qualified dividend	0.00		0.03	0.01
Capital gains	0.04		0.55	0.52
Total distribution	2.12		1.92	1.76
Series Q Preferred Stock [Member]
Class of Stock [Line Items]
Ordinary income	4.00		2.98	2.91
Qualified dividend	0.01		0.06	0.08
Capital gains	0.26		1.23	1.28
Total distribution	$ 4.27		$ 4.27	$ 4.27

[1] Taxability for 2019 is estimated.