Noncontrolling Interests - Noncontrolling Interest Summary (Detail) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2020	Dec. 31, 2019
Noncontrolling Interest [Line Items]
Operating Partnership noncontrolling interest		$ 3,502,996	$ 2,775,394
Noncontrolling interests		4,392,132	3,418,657
Total Assets		55,759,598	40,031,850
Total liabilities		19,270,291	13,960,066
Total Liabilities		19,270,291	13,960,066
Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Total Assets		8,739,111	6,926,636
Total liabilities		220,180	184,583
Total Liabilities		$ 220,180	$ 184,583
Prologis U S Logistics Venture
Noncontrolling Interest [Line Items]
Parent Company's Ownership Percentage	[1]	55.00%	55.00%
Operating Partnership noncontrolling interest	[1]	$ 3,405,276	$ 2,677,846
Total Assets	[1]	7,707,131	6,077,016
Total liabilities	[1]	147,625	99,397
Total Liabilities	[1]	$ 147,625	$ 99,397
Other Consolidated Entities [Member]
Noncontrolling Interest [Line Items]
Parent Company's Ownership	[2]	various	various
Operating Partnership noncontrolling interest	[2]	$ 97,720	$ 97,548
Total Assets	[2]	1,031,980	849,620
Total liabilities	[2]	72,555	85,186
Total Liabilities	[2]	72,555	85,186
Prologis, L.P. [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests		3,502,996	2,775,394
Total Assets		55,759,598	40,031,850
Total liabilities		19,270,291	13,960,066
Total Liabilities		19,270,291	13,960,066
Prologis, L.P. [Member] | Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Limited partners in Prologis, L.P.	[3],[4]	889,136	643,263
Total Assets	[3],[4]	0	0
Total liabilities	[3],[4]	0	0
Total Liabilities	[3],[4]	0	0
Prologis, Inc. [Member]
Noncontrolling Interest [Line Items]
Total Assets		8,739,111	6,926,636
Total liabilities		220,180	184,583
Total Liabilities		220,180	184,583
Prologis, Inc. [Member] | Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests		$ 4,392,132	$ 3,418,657

[1] As discussed in Note 3, in January 2020, USLV acquired a portfolio of 127 operating properties, aggregating 19.0 million square feet, in the IPT Transaction for $2.0 billion, including transaction costs and the assumption and repayment of debt. Our partner contributed their share of the purchase price to fund the acquisition.

[2] Includes our two partnerships that have issued limited partnership units to third parties, as discussed above, along with various other consolidated entities. The limited partnership units outstanding at September 30, 2020 and December 31, 2019 were exchangeable into cash or, at our option, 0.3 million shares of the Parent’s common stock.

[3] We had 8.6 million Class A Units that were convertible into 8.0 million and 8.1 million limited partnership units of the OP at September 30, 2020 and December 31, 2019, respectively.

[4] At September 30, 2020 and December 31, 2019, excluding the Class A Units, there were limited partnership units in the OP that were exchangeable into cash or, at our option, 8.6 million and 6.2 million shares of the Parent’s common stock, respectively. We issued 2.3 million limited partnership units in the Liberty Transaction and 0.5 million limited partnership units as partial consideration for the acquisition of other properties in 2020. Also included are the vested OP Long-Term Incentive Plan Units associated with our long-term compensation plan. See further discussion of LTIP Units in Note 9.