Annual report pursuant to Section 13 and 15(d)

Development of Rental Properties - Change in Accounting Estimate (Details)

v2.4.0.6
Development of Rental Properties - Change in Accounting Estimate (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2010
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share $ 0.10
Service Life [Member]
 
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Change in Accounting Principle Effect on Depreciation and Amortization Expense $ 9.0