Identified Intangible Assets and Intangible Liabilities (Details) (USD $) In Thousands | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | ||||||||
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Sep. 30, 2011 | Dec. 31, 2010 | Sep. 30, 2011
Below Market Leases Net Of Above Market Leases [Member] | Sep. 30, 2010
Below Market Leases Net Of Above Market Leases [Member] | Sep. 30, 2011
Below Market Leases Net Of Above Market Leases [Member] | Sep. 30, 2010
Below Market Leases Net Of Above Market Leases [Member] | Sep. 30, 2011
Other Identified Intangible Assets [Member] | Sep. 30, 2010
Other Identified Intangible Assets [Member] | Sep. 30, 2011
Other Identified Intangible Assets [Member] | Sep. 30, 2010
Other Identified Intangible Assets [Member] | Sep. 30, 2011
Tenant Under Ground Leases [Member] | Sep. 30, 2010
Tenant Under Ground Leases [Member] | Sep. 30, 2011
Tenant Under Ground Leases [Member] | Sep. 30, 2010
Tenant Under Ground Leases [Member] | |
Finite Lived Intangible Assets [Line Items] | ||||||||||||||
Identified intangible assets (included in other assets): Gross | $ 690,996 | $ 681,270 | ||||||||||||
Identified intangible assets (included in other assets): Accumulated amortization | (356,118) | (335,113) | ||||||||||||
Finite-Lived Intangible Assets, Net, Total | 334,878 | 346,157 | ||||||||||||
Identified intangible liabilities (included in deferred credit): Gross | 861,696 | 856,689 | ||||||||||||
Identified intangible liabilities (included in deferred credit): Accumulated amortization | (380,198) | (335,317) | ||||||||||||
Identified intangible liabilities (included in deferred credit): Net | 481,498 | 521,372 | ||||||||||||
Amortization of Intangible Assets | 16,100 | 16,756 | 49,387 | 48,476 | 16,059 | 15,032 | 43,782 | 45,317 | 344 | 539 | 1,033 | 1,618 | ||
Future Amortization Expense, Year One | 51,092 | 47,168 | 1,377 | |||||||||||
Future Amortization Expense, Year Two | 43,174 | 39,703 | 1,377 | |||||||||||
Future Amortization Expense, Year Three | 37,419 | 21,398 | 1,377 | |||||||||||
Future Amortization Expense, Year Four | 34,673 | 16,471 | 1,377 | |||||||||||
Future Amortization Expense, Year Five | $ 31,281 | $ 13,924 | $ 1,377 |
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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- Definition The aggregate sum of gross carrying value of a major finite-lived intangible asset class, less accumulated amortization and any impairment charges. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of amortization expense expected to be recognized during year five of the five succeeding fiscal years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of amortization expense expected to be recognized during year four of the five succeeding fiscal years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of amortization expense expected to be recognized during year one of the five succeeding fiscal years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of amortization expense expected to be recognized during year three of the five succeeding fiscal years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of amortization expense expected to be recognized during year two of the five succeeding fiscal years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate sum of gross carrying value of a major finite-lived intangible liabilty class, less accumulated amortization. A major class is composed of intangible liabilities that can be grouped together because they are similar, either by their nature or by their use in the operations of a company
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- Definition The accumulated amount of amortization of a major finite-lived intangible liability class. A major class is composed of intangible liabilities that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.
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- Definition This element represents the identifiable intangible liability established upon acquisition based on an unfavorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date.
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