v2.3.0.15

Intangibles (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2011 Property State Year Province License LeaseRenewal	Sep. 30, 2010	Sep. 30, 2011 Segment Property Year State Province License LeaseRenewal	Sep. 30, 2010	Dec. 31, 2010 Property Year
Intangible Assets:
Above market lease intangibles	$ 203,460,000		$ 203,460,000		$ 13,232,000
In-place and other lease intangibles	618,153,000		618,153,000		133,582,000
Other intangibles	16,453,000		16,453,000		13,649,000
Accumulated amortization	(152,486,000)		(152,486,000)		(100,808,000)
Goodwill	288,196,000		288,196,000		19,901,000
Net Intangible Assets	973,776,000		973,776,000		79,556,000
Remaining weighted average amortization period of lease-related intangible assets in years			19.6		18.5
Intangible Liabilities:
Below market lease intangibles	486,228,000		486,228,000		22,398,000
Other lease intangibles	157,971,000		157,971,000
Accumulated amortization	(26,425,000)		(26,425,000)		(12,495,000)
Net Intangible Liabilities	617,774,000		617,774,000		9,903,000
Remaining weighted average amortization period of lease-related intangible liabilities in years	18.5		18.5		6.9
Intangibles (Textuals) [Abstract]
Net amortization expense	23,900,000	2,300,000	40,000,000	5,700,000
Estimated net amortization of the intangibles during 2012			76,100,000
Estimated net amortization of the intangibles during 2013			18,400,000
Estimated net amortization of the intangibles during 2014			15,000,000
Estimated net amortization of the intangibles during 2015			8,900,000
Estimated net amortization of the intangibles during 2016			$ 7,000,000

X

- Definition

This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired.

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- Definition

This element represents the identifiable intangible asset established upon acquisition based on a favorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date.

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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.

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The calculated weighted-average useful life of all finite-lived intangible assets.

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The amount of amortization expense expected to be recognized during year five of the five succeeding fiscal years.

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The amount of amortization expense expected to be recognized during year four of the five succeeding fiscal years.

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The amount of amortization expense expected to be recognized during year one of the five succeeding fiscal years.

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The amount of amortization expense expected to be recognized during year three of the five succeeding fiscal years.

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The amount of amortization expense expected to be recognized during year two of the five succeeding fiscal years.

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Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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- Definition

This element represents a liability associated with the acquisition of an off-market lease when the terms of the lease are unfavorable to the market terms for the lease at the date of acquisition.

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Gross carrying amount before accumulated amortization as of the balance sheet date of intangible assets not otherwise specified in the taxonomy having a reasonably expected period of economic benefit.

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Finite Lived Intangible Assets Liabilities Net Amortization Expense.

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Finite lived intangible liabilities.

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The accumulated amount of amortization of a major finite-lived intangible liability class.

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Finite lived intangible liabilities net.

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Intangible assets.

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Intangibles.

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Other lease intangibles.

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Remaining Finite Lived Lease Related Intangible Liability Weighted Average Useful Life

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