Tenant Leases (Future Minimum Rentals To Be Received Under Non-Cancelable Operating Leases) (Details) (USD $) In Thousands |
9 Months Ended |
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Sep. 30, 2011 | |
| Tenant Leases [Abstract] | |
| October 1 through December 31, 2011 | $ 149,754 |
| 2012 | 576,565 |
| 2013 | 503,946 |
| 2014 | 437,558 |
| 2015 | 367,644 |
| 2016 and thereafter | 1,450,215 |
| Total | $ 3,485,682 |
| Operating leases with various expiration dates through year | 2033 |
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- Definition Tenant Leases [Abstract]
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- Definition The date upon which a lease or a group of leases is set to expire.
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- Definition Future minimum rental payments in aggregate as of the balance sheet date under operating leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Future rental payments receivable within one year of the balance sheet date under an operating lease. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Future rental payments receivable within the fifth year from the balance sheet date under an operating lease. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Future rental payments receivable within the fourth year from the balance sheet date under an operating lease. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Future rental payments receivable within the third year from the balance sheet date under an operating lease. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Future rental payments receivable within the second year from the balance sheet date under an operating lease. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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