INCOME TAXES (Details) (USD $)	3 Months Ended	9 Months Ended			9 Months Ended				9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Dec. 31, 2011	May 06, 2011 subsidiary	Sep. 30, 2012 GGP	Dec. 31, 2011 GGP	Oct. 20, 2011 GGP subsidiary	May 06, 2011 GGP	Sep. 30, 2012 GGP Maximum
Income taxes
Percentage of certain taxes indemnified by related party					93.75%
Amount of certain taxes indemnified by related party									$ 303,800,000
Amount of interest income receivable on the Tax Indemnity receivable					34,000,000	28,000,000
Amount of combined deficiencies determined by the IRS sought to be overturned by the petition filed								144,100,000
Number of former taxable REIT subsidiaries subject to litigation for which motion is filed to consolidate cases				2			2
Reduction in tax indemnity receivable	2,873,000	11,655,000
Unrecognized tax benefits, excluding interest	101,000,000	101,000,000	101,400,000
Accrued interest related to unrecognized tax benefits	34,500,000	34,500,000	28,500,000
Increase in interest expense related to unrecognized tax benefits	$ 2,100,000	$ 6,000,000