Business Combinations - Additional Information (Detail)	1 Months Ended	3 Months Ended	12 Months Ended					1 Months Ended	3 Months Ended				12 Months Ended			12 Months Ended		0 Months Ended	1 Months Ended
	May 31, 2011	Jun. 30, 2011 EUR (€)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Jun. 30, 2011 USD ($)	Jun. 02, 2011 USD ($)	May 31, 2011 PEPR [Member]	Jun. 30, 2011 PEPR [Member] USD ($)	Jun. 30, 2011 PEPR [Member] EUR (€)	Dec. 31, 2012 PEPR [Member] USD ($)	Dec. 31, 2012 PEPR [Member] EUR (€)	Dec. 31, 2011 PEPR and AMB [Member] USD ($)	Dec. 31, 2012 Co-Investment Venture Acquisitions [Member] USD ($) Transactions	Dec. 31, 2012 AMB [Member] USD ($)	Dec. 31, 2012 Prologis North American Industrial Fund [Member] USD ($)	Feb. 03, 2012 Prologis North American Industrial Fund [Member] USD ($)	Feb. 22, 2012 Prologis California [Member] USD ($)	Nov. 30, 2012 Prologis North American Properties Fund I [Member] USD ($)
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items]
Acquisition of remaining interest		€ 1,100,000,000				$ 1,600,000,000	$ 5,856,500,000				$ 1,626,900,000				$ 5,856,500,000				$ 33,200,000
Acquisition of additional units	96,500,000	380,900,000						2,700,000
Cash paid for PEPR Acquisition									1,000,000,000	715,800,000
Borrowings under LOC for PEPR Acquisition		500,000,000
Mark to market equity investment in PEPR from carrying value												486,000,000
Gain on PEPR investment recognized prior to Acquisition									85,900,000	59,600,000
Period of time included in actual results				7 months
Period of time included in pro forma adjustments				5 months
Rental income included in pro forma result													575,200,000	170,600,000
Rental expenses included in pro forma result													154,400,000	42,500,000
Rental income included in discontinued operations			82,719,000	141,547,000	225,064,000								50,500,000	4,900,000
Rental expenses included in discontinued operations													11,900,000	900,000
Percentage interest acquired in Prologis North American Fund II			60.00%													63.00%
Percentage owned in unconsolidated co-investment venture																100.00%
Business acquisition, loan repayment																336,100,000
Business acquisition purchase price allocation real estate																	1,600,000,000	496,300,000
Business acquisition purchase price allocation other assets																	27,300,000	17,700,000
Business acquisition purchase price allocation debt																	875,400,000	150,000,000
Gain on acquisition of business																		273,000,000	21,200,000
Real estate assets											$ 4,448,200,000				$ 8,197,600,000				$ 117,000,000
Number of transactions in acquisitions														3