v2.4.0.6

Earnings (Loss) Per Common Share/Unit (Tables) | 12 Months Ended
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Dec. 31, 2011
Earnings (Loss) Per Common Share/Unit [Abstract] |
Schedule of earnings per share basic and diluted by common class |
REIT |  | 2011 (1) |  |  | 2010 (1)(2) |  |  | 2009 (1)(2) |
Net loss attributable to common shares |  | $ | (188,110) |  |  | $ | (1,295,920) |  |  | $ | (2,650) |
Weighted average common shares outstanding - Basic and Diluted (3) |  |  | 370,534 |  |  |  | 219,515 |  |  |  | 179,966 |
Net loss per share attributable to common shares - Basic and Diluted |  | $ | (0.51) |  |  | $ | (5.90) |  |  | $ | (0.01) |
Operating Partnership |  |  |  |
Net loss attributable to common unitholders |  | $ | (188,459) |  |  | $ | (1,295,920) |  |  | $ | (2,650) |
Weighted average common partnership units outstanding - Basic and Diluted (3) |  |  | 371,730 |  |  |  | 219,515 |  |  |  | 179,966 |
Net loss per unit attributable to common unitholders - Basic and Diluted |  | $ | (0.51) |  |  | $ | (5.90) |  |  | $ | (0.01) |
(1) | In periods with a net loss, the inclusion of any incremental shares is anti-dilutive, and therefore, both basic and diluted shares/units are the same.
(2) | As a result of the Merger, the historical shares of ProLogis were adjusted by the Merger exchange ratio of 0.4464 for all periods presented. As a result, the per share/unit calculations and shares/units outstanding were also adjusted.
(3) | Total weighted average potentially dilutive share awards outstanding (in thousands) for the years ended December 31, 2011, 2010 and 2009 were 7,648, 4,498 and 5,151, respectively.

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- Definition Tabular disclosure of the reconciliation of basic net earnings per share (or unit) to diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 260 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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