SUBSEQUENT EVENTS - Galleria Credit Agreement (Details) - Galleria - Line of Credit	Jan. 26, 2016 USD ($)
Galleria Credit Agreement
Subsequent Event [Line Items]
Aggregate debt outstanding	$ 1,941,800,000
Galleria Credit Agreement | Maximum
Subsequent Event [Line Items]
Total net leverage ratio	5.50
Applicable leverage ratio following the closing of any material acquisition	5.95
Galleria Credit Agreement | Minimum
Subsequent Event [Line Items]
Applicable leverage ratio following the closing of any material acquisition	1.00
Term Loan | Galleria Term Loan A Facility
Subsequent Event [Line Items]
Amount of term loan facility	$ 2,000,000,000
Term of revolving credit facility	5 years
Aggregate debt outstanding	$ 944,300,000
Term Loan | Galleria Term Loan B Facility
Subsequent Event [Line Items]
Amount of term loan facility	$ 1,000,000,000
Term of revolving credit facility	7 years
Discount percentage	0.50%
Aggregate debt outstanding	$ 995,000,000
Revolving Credit Facility | Galleria Revolving Facility
Subsequent Event [Line Items]
Term of revolving credit facility	5 years
Aggregate principal amount	$ 1,500,000,000
Aggregate debt outstanding	0
Assumed fees payable | Galleria Revolving Facility
Subsequent Event [Line Items]
Assumed fees payable	$ 2,500,000