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Income Taxes (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Series J Preferred Stock [Member] |  |  |
Preferred distributions per depositary share |  |  |
Ordinary income | $ 0.3130 | $ 1.4652 |
Ordinary Income as a percentage of distributions | 23.02% | 80.84% | 0.00%
Long term capital gains |  |  | $ 1.3697
Long term capital gains as percentage of distributions | 0.00% | 0.00% | 75.57%
Unrecaptured Section 1250 gain |  | $ 0.2423 | $ 0.4428
Unrecaptured section 1250 gain as percentage of distributions | 0.00% | 13.37% | 24.43%
Return of Capital | $ 1.0402 |  |
Return of capital as percentage of distributions | 76.52% | 0.00% | 0.00%
Qualified Dividends | $ 0.0062 | $ 0.1050 |
Qualified dividends as percentage of distributions | 0.46% | 5.79% | 0.00%
Preferred distributions per depositary share | $ 1.3594 | $ 1.8125 | $ 1.8125
Preferred distributions, percentage | 100.00% | 100.00% | 100.00%
Series K Preferred Stock [Member] |  |  |
Preferred distributions per depositary share |  |  |
Ordinary income | $ 0.3130 | $ 1.4652 |
Ordinary Income as a percentage of distributions | 23.02% | 80.84% | 0.00%
Long term capital gains |  |  | $ 1.3697
Long term capital gains as percentage of distributions | 0.00% | 0.00% | 75.57%
Unrecaptured Section 1250 gain |  | $ 0.2423 | $ 0.4428
Unrecaptured section 1250 gain as percentage of distributions | 0.00% | 13.37% | 24.43%
Return of Capital | $ 1.0402 |  |
Return of capital as percentage of distributions | 76.52% | 0.00% | 0.00%
Qualified Dividends | $ 0.0062 | $ 0.1050 |
Qualified dividends as percentage of distributions | 0.46% | 5.79% | 0.00%
Preferred distributions per depositary share | $ 1.3594 | $ 1.8125 | $ 1.8125
Preferred distributions, percentage | 100.00% | 100.00% | 100.00%

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