Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2012

Significant Accounting Policies [Abstract]

Estimated Useful Lives Of Assets

Leasehold interests	Remaining lease term
Buildings and improvements	5 to 40 years
Tenant improvements	The shorter of the term of the
	related lease or useful life
Furniture, fixtures and equipment	5 to 10 years