Long-Term Compensation - Additional Information (Detail) - USD ($) shares in Millions	1 Months Ended	6 Months Ended
Jan. 31, 2018	Jun. 30, 2018
Prologis Out-Performance Plan [Member]
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%
Prologis Out-Performance Plan [Member] \| 2018 - 2020 Performance Periods [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		$ 23,300,000
Assumed risk free interest rate		2.10%
Expected volatility rate		16.50%
Prologis Out-Performance Plan [Member] \| 2018 - 2020 Performance Periods [Member] \| Tranche 1 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights, percentage		20.00%
Prologis Out-Performance Plan [Member] \| 2018 - 2020 Performance Periods [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%
Prologis Out-Performance Plan [Member] \| 2015 - 2017 Performance Periods [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate of performance pool award	$ 110,200,000
Common stock	0.6
Vested LTIP Units – POP	1.2
Prologis Out-Performance Plan [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years
Prologis Out-Performance Plan [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		10 years
PPP and Annual LTI Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		4 years

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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Percentage added to earned amount 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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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options vested POP LTIP units.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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- Definition

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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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- Definition

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

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-Name Accounting Standards Codification
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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 share-based compensation awards.

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