Stockholders' Equity of Prologis, Inc - Summary of Taxability of Common and Preferred Stock Dividends (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2020	[1]	Dec. 31, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Ordinary income	$ 2.12		$ 2.08	$ 1.34
Qualified dividend	0.00		0.00	0.03
Capital gains	0.20		0.04	0.55
Total distribution	2.32		2.12	1.92
Series Q Preferred Stock [Member]
Class of Stock [Line Items]
Ordinary income	3.96		4.00	2.98
Qualified dividend	0.02		0.01	0.06
Capital gains	0.29		0.26	1.23
Total distribution	$ 4.27		$ 4.27	$ 4.27

[1] Taxability for 2020 is estimated.