SPONSORS AND MANAGEMENT WARRANTS (Details) (USD $)	12 Months Ended				0 Months Ended					0 Months Ended		1 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Brookfield	Dec. 07, 2012 Blackstone Real Estate Partners	Dec. 07, 2012 Fairholme Funds	Dec. 31, 2012 Sponsors Warrants	Dec. 31, 2011 Sponsors Warrants	Nov. 09, 2010 Sponsors Warrants	Nov. 09, 2012 Sponsors Warrants Brookfield	Dec. 31, 2012 Sponsors Warrants Brookfield	Feb. 28, 2011 Management Warrants	Dec. 31, 2012 Management Warrants	Dec. 31, 2011 Management Warrants	Feb. 28, 2011 Management Warrants David R. Weinreb	Feb. 28, 2011 Management Warrants Grant Herlitz	Feb. 28, 2011 Management Warrants Andrew C. Richardson
Sponsors and Management Warrants
Issuance of warrants to purchase common stock (in shares)	1,525,272						1,916,667		8,000,000	1,525,272		2,862,687
Estimated initial value									$ 69,500,000
Exercise price (in dollars per share)					$ 30.00	$ 30.00			$ 50.00	$ 50.00					$ 42.23	$ 42.23	$ 54.50
Proceeds from exercise of warrants										76,300,000
Number of shares of common stock under warrants repurchased					333,333	1,916,667				2,308,061
Payments for repurchase of warrants	80,548,000									89,300,000
Cash consideration paid net of exercise price										13,000,000
Warrant liability gain (loss)	(185,017,000)	101,584,000	(140,900,000)
Proceeds from issuance of management warrants		2,000,000	17,000,000									19,000,000
Settlement of warrant liability for cash consideration										67,500,000
Additional paid-in capital				108,600,000
Warrant liabilities	$ 123,573,000	$ 127,764,000					$ 58,500,000	$ 102,600,000			$ 67,500,000		$ 65,100,000	$ 25,200,000