Business Combinations (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2011	Dec. 31, 2011	Jun. 02, 2011	Dec. 31, 2010
Schedule of consideration transferred for business combination
Prologis shares and limited partnership units outstanding at June 2, 2011 (60% of total shares of the combined company)		458,597,000	571,400,000	254,482,000
Total shares of the combined company (for accounting purposes)			952,300,000
Merger and PEPR acquisition	380,900,000
Multiplied by price of Prologis common share on June 2, 2011			$ 15.21
Consideration associated with common shares issued			$ 5,794.1
Add consideration associated with share based payment awards			62.4
Total purchase price		$ 86.5	$ 5,856.5