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Financial Instruments and Fair Value Measurements - Derivative Activity (Parenthetical) (Detail)
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12 Months Ended | 3 Months Ended | |||||
|---|---|---|---|---|---|---|---|
|
Dec. 31, 2014
USD ($)
Option
|
Dec. 31, 2013
USD ($)
Contract
|
Dec. 31, 2012
USD ($)
Contract
|
Dec. 31, 2013
Prologis European Logistics Partners [Member]
USD ($)
Contract
|
Dec. 31, 2013
Nippon Prologis REIT Inc [Member]
USD ($)
Contract
|
Dec. 31, 2012
NAIF II [Member]
USD ($)
Contract
|
Sep. 30, 2014
Yen Term Loan [Member]
JPY (¥)
Contract
|
|
| Derivative [Line Items] | |||||||
| Number of option exercised | 3 | ||||||
| Number of contracts | 2 | ||||||
| Net gain from option exercised | $ 1,100,000 | ||||||
| Notional value of swap contracts contributed | 13 | ||||||
| Number of swap contracts | 13 | 4 | 5 | 1 | |||
| Notional value of swap contracts | $ 333,500,000 | $ 445,400,000 | $ 383,900,000 | $ 526,400,000 | $ 71,000,000 | ¥ 40,900,000,000 | |
| Maturity date of interest rate swap contracts | Various expiration dates between 2017 and 2019 | ||||||