Long-Term Compensation - Additional Information (Detail) - Prologis Out-Performance Plan [Member] - USD ($) shares in Millions	1 Months Ended	6 Months Ended
Jan. 31, 2020	Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance Period		3 years
Outperformance hurdle, above MSCI U.S. REIT Index		1.00%
Performance pool as percentage of excess value, if outperformance hurdle is met		3.00%
Forfeited awards after seven years		7 years
2020 - 2022 Performance Period [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance Period	3 years
Cash incentive award maximum	$ 100,000,000
Holding period	3 years
Aggregate fair value	$ 28,800,000
Assumed risk free interest rate	1.70%
Expected volatility rate	16.00%
2020 - 2022 Performance Period [Member] \| Tranche 1 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights, percentage		20.00%
2020 - 2022 Performance Period [Member] \| Tranche 2 (After Seven Year Cliff) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		7 years
Vesting rights, percentage		80.00%
2017 - 2019 Performance Period [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cash incentive award maximum		$ 75,000,000
Holding period		3 years
Aggregate of performance pool award	$ 75,000,000.0
Common stock	0.3
POP LTIP Units and LTIP Units	0.5
Initial performance period		3 years
2017 - 2019 Performance Period [Member] \| Tranche 1 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights, percentage	20.00%
2017 - 2019 Performance Period [Member] \| Tranche 2 (After Seven Year Cliff) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		7 years
Vesting rights, percentage		80.00%
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		10 years

Cash incentive award forfeited if shareholder return not become positive during period.

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Cash incentives awards granted amount maximum.

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Cash incentives awards granted amount under common stock shares.

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Cash incentives awards granted amount under performance pool.

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Initial performance period.

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Percentage added to earned amount under plan.

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Percentage of performance pool over excess value under plan.

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Performance period.

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- Definition

Share-based compensation arrangement by share-based payment award, award holding period.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of vesting of award under share-based payment arrangement.

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