Identified Intangible Assets and Intangible Liabilities (Tables)

9 Months Ended

Sep. 30, 2011

Schedule of Identified Intangible Assets and Intangible Liabilities (Table)

	Balance as of
	September 30,		December 31,
(Amounts in thousands)	2011		2010
Identified intangible assets:
Gross amount	$	690,996	$	681,270
Accumulated amortization		(356,118)		(335,113)
Net	$	334,878	$	346,157
Identified intangible liabilities (included in deferred credit):
Gross amount	$	861,696	$	856,689
Accumulated amortization		(380,198)		(335,317)
Net	$	481,498	$	521,372

Below Market Leases Net Of Above Market Leases [Member]

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(Amounts in thousands)
2012	$	51,092
2013		43,174
2014		37,419
2015		34,673
2016		31,281

Other Identified Intangible Assets [Member]

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(Amounts in thousands)
2012	$	47,168
2013		39,703
2014		21,398
2015		16,471
2016		13,924

Tenant Under Ground Leases [Member]

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(Amounts in thousands)
2012	$	1,377
2013		1,377
2014		1,377
2015		1,377
2016		1,377