v2.4.0.6

Supplemental Cash Flow Information (Details) (USD $) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 Parcels | Dec. 31, 2011 Land_Position | Dec. 31, 2011 Parcels | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2008
Supplemental Cash Flow Information [Abstract] |  |  |  |  |  |
Costs of share-based compensation awards |  |  | $ 8,900,000 | $ 5,300,000 | $ 5,800,000 |
Ownership interest received as part of a non-cash proceed from contribution |  |  | 5,000,000 | 4,600,000 | 30,300,000 |
Debt and other liabilities in connection with acquisition and construction |  |  |  |  |  | 61,700,000
Number of land parcels exchanged | 3 | 3 | 3 |  |  |
Fair Value Of Land Parcels | 10,900,000 |  |  |  |  |
Impairment of note receivable |  |  |  | $ 2,900,000 |  |

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