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Discontinued Operations (Details) (USD $) | 12 Months Ended | 1 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Nov. 30, 2012 Kings Plaza Energy Joint Venture [Member] | Nov. 30, 2012 Kings Plaza Regional Shopping Center [Member] | Nov. 28, 2012 Kings Plaza Regional Shopping Center [Member] | Dec. 31, 2012 Kings Plaza Regional Shopping Center [Member] | Dec. 31, 2011 Kings Plaza Regional Shopping Center [Member] | Dec. 31, 2010 Kings Plaza Regional Shopping Center [Member] | Nov. 28, 2012 Kings Plaza Regional Shopping Center [Member] Macerich [Member]
Description of Transaction |  |  |  |  |  |  |  |  |  |
Real Estate Property Sold Gross |  |  |  |  |  |  |  |  |  | $ 751,000,000
Proceeds from sale of real estate |  |  |  |  |  |  |  |  |  | 479,000,000
Common Stock From Sale of Real Estate | 30,000,000 | 0 | 0 |  |  |  |  |  |  | 30,000,000
Financial Statement Gain |  |  |  |  |  | 601,976,000 |  |  |  |
Disposal Group, Deferred Gain on Disposal |  |  |  |  |  | 2,348,000 |  |  |  |
Remaining Equity Interest Percentage Acquired |  |  |  | 75.00% |  |  |  |  |  |
Acquisition of the noncontrolling interest | 7,800,000 | 0 | 0 | 7,800,000 |  |  |  |  |  |
Special long-term capital gain dividend (in dollars per share) per share | $ 122.00 |  |  |  | $ 122.00 |  |  |  |  |
Special long-term capital gain dividend | 623,178,000 |  |  |  | 623,178,000 |  |  |  |  |
Disposal Group Assets And Liabilities |  |  |  |  |  |  |  |  |  |
Assets related to discontinued operations | 0 | 137,418,000 |  |  |  |  | 0 | 137,418,000 |  |
Liabilities related to discontinued operations | 0 | 250,000,000 |  |  |  |  | 0 | 250,000,000 |  |
Disposal Group Income And Expenses |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  | 61,836,000 | 69,006,000 | 67,144,000 |
Total expenses |  |  |  |  |  |  | 36,512,000 | 42,791,000 | 48,858,000 |
Operating income from discontinued operations |  |  |  |  |  |  | 25,324,000 | 26,215,000 | 18,286,000 |
Net gain on sale of real estate | 599,628,000 |  |  |  |  |  | 599,628,000 | 0 | 0 |
Income from discontinued operations | 624,952,000 | 26,215,000 | 18,286,000 |  |  |  | 624,952,000 | 26,215,000 | 18,286,000 |
Fees to Vornado | $ 4,318,000 | $ 3,687,000 | $ 3,665,000 |  |  |  | $ 1,608,000 | $ 1,801,000 | $ 1,517,000 |

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