Supplemental Cash Flow Information - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017
Supplemental Cash Flow Information [Line Items]
Capitalization for equity based compensation expense	$ 14.1	$ 14.0
Noncash acquisition, real estate acquired	11.8
Notes receivable backed by real estate	19.5
Interest paid, net of amounts capitalized	154.4	188.1
Cash paid for income taxes, net of refunds	32.3	$ 23.6
Limited Partners [Member] \| Prologis, L.P. [Member] \| Common [Member]
Supplemental Cash Flow Information [Line Items]
PLD units redeemed for common shares		0.7
Unconsolidated Entities [Member]
Supplemental Cash Flow Information [Line Items]
Equity ownership interest received	$ 105.4	$ 22.8

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Supplemental cash flow information.

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- Definition

Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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The net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset in a noncash transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Nonmonetary assets and liabilities are assets and liabilities that will not result in cash receipts or cash payments in the future.

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