Financial Instruments and Fair Value Measurements - Additional Information (Detail)	3 Months Ended	6 Months Ended			6 Months Ended		3 Months Ended		6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2012 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Dec. 31, 2012 USD ($)	Jun. 30, 2013 Euro [Member] Contract	Jun. 30, 2013 United States of America, Dollars Contract	Jun. 30, 2013 Foreign Currency Forward Contracts [Member] USD ($)	Dec. 31, 2012 Foreign Currency Forward Contracts [Member] USD ($)	Jun. 30, 2013 Foreign Currency Forward Contracts [Member] USD ($)	Mar. 31, 2013 Interest Rate Swaps [Member] Nippon Prologis REIT Inc [Member] USD ($)	Jun. 30, 2013 June 2017 And June 2018 [Member] Foreign Currency Forward Contracts [Member] USD ($) Contract	Jun. 30, 2013 June 2017 And June 2018 [Member] Foreign Currency Forward Contracts [Member] EUR (€)	Jun. 30, 2013 June 2018 [Member] USD ($)	Jun. 30, 2013 June 2018 [Member] JPY (¥)	Jun. 30, 2013 June 2018 [Member] Foreign Currency Forward Contracts [Member] Contract
Derivative [Line Items]
Number of foreign currency forward contracts											7	7			3
Foreign currency forward contracts maturity dates								April and May 2013			June 2017 and June 2018	June 2017 and June 2018	June 2018	June 2018
Aggregate notional amount											$ 800,000,000	€ 599,900,000	$ 250,000,000	¥ 24,100,000,000
Derivative forward exchange rate											1.33	1.33	96.54	96.54
Settled derivative contracts									1,300,000,000
Accounts payable and accrued expenses		651,081,000		611,770,000				17,500,000
Accumulated other comprehensive income (loss)		14,700,000		33,800,000			12,400,000	(17,500,000)	12,400,000
Gain in other comprehensive income (loss)							(1,100,000)		4,300,000
Other Assets							12,400,000		12,400,000
Maximum length of time hedged in Cash Flow Hedge		10 years
Number of interest rate swap contracts					1	1
Unsettled derivative contract included in accounts payable and accrued expenses		6,300,000		28,000,000
Estimate of additional interest expense reclassified		1,100,000
Hedge ineffectiveness (loss)	2,300,000		1,400,000
Loss related to interest rate swaps										$ 7,800,000