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Mortgages, Loans Payable And Other Obligations (Narrative) (Details) (USD $)
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3 Months Ended | ||
|---|---|---|---|
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Mar. 31, 2014
property
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Mar. 31, 2013
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Dec. 31, 2013
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| Debt Instrument [Line Items] | |||
| Number of properties with encumbered company mortgages | 30 | ||
| Book value of encumbered properties | $ 898,000,000 | ||
| Cash paid for interest | 36,119,000 | 36,200,000 | |
| Interest capitalized | 3,141,000 | 3,467,000 | |
| Total indebtedness | 2,232,287,000 | 2,362,766,000 | |
| Total indebtedness, weighted average interest rate | 5.54% | 5.62% | |
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Revolving Credit Facility Borrowing And Other Variable Rate Mortgage Debt [Member]
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| Debt Instrument [Line Items] | |||
| Total indebtedness | 150,653,000 | 80,228,000 | |
| Total indebtedness, weighted average interest rate | 2.04% | 2.74% | |
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Fixed Rate Debt And Other Obligations [Member]
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| Debt Instrument [Line Items] | |||
| Total indebtedness | 2,081,634,000 | 2,282,538,000 | |
| Total indebtedness, weighted average interest rate | 5.79% | 5.72% | |
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Unconsolidated Joint Venture [Member]
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| Debt Instrument [Line Items] | |||
| Interest capitalized | $ 918,000 | $ 298,000 | |