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Mortgages, Loans Payable And Other Obligations (Narrative) (Details) (USD $)
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6 Months Ended | ||
|---|---|---|---|
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Jun. 30, 2014
property
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Jun. 30, 2013
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Dec. 31, 2013
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| Debt Instrument [Line Items] | |||
| Number of properties with encumbered company mortgages | 27 | ||
| Book value of encumbered properties | $ 879,000,000 | ||
| Cash paid for interest | 61,999,000 | 60,838,000 | |
| Interest capitalized | 6,493,000 | 6,748,000 | |
| Total indebtedness | 2,208,268,000 | 2,362,766,000 | |
| Total indebtedness, weighted average interest rate | 5.51% | 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 | 164,363,000 | 80,228,000 | |
| Total indebtedness, weighted average interest rate | 2.11% | 2.74% | |
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Fixed Rate Debt And Other Obligations [Member]
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| Debt Instrument [Line Items] | |||
| Total indebtedness | 2,043,905,000 | 2,282,538,000 | |
| Total indebtedness, weighted average interest rate | 5.78% | 5.72% | |
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Unconsolidated Joint Venture [Member]
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| Debt Instrument [Line Items] | |||
| Interest capitalized | $ 1,953,000 | $ 584,000 | |