BASIS OF PRESENTATION AND ORGANIZATION Narrative (Details)		3 Months Ended			6 Months Ended		12 Months Ended
	Jan. 01, 2020	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($) hotel	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Impairment of real estate		$ 0		$ 0	$ 48,738,000	$ 0
Number of reportable segments | segment					4
Retained earnings, decrease		3,554,815,000			$ 3,554,815,000		$ 3,148,133,000
Accounting standards update	us-gaap:AccountingStandardsUpdate201613Member						us-gaap:AccountingStandardsUpdate201613Member
Outlet Collection, Riverwalk
Restructuring Cost and Reserve [Line Items]
Impairment of real estate		0	$ 48,700,000	$ 0	48,738,000	$ 0
Corporate Restructuring
Restructuring Cost and Reserve [Line Items]
Assets held for sale							$ 2,000,000,000.0
Restructuring charges		1,637,000
Corporate Restructuring | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining		1,300,000			1,300,000
Corporate Restructuring | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining		$ 2,300,000			2,300,000
One-time Termination Benefits | Corporate Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges					$ 1,600,000		34,300,000
COVID-19 | Outlet Collection, Riverwalk
Restructuring Cost and Reserve [Line Items]
Impairment of real estate			$ 48,700,000
The Woodlands Resort And Conference Center | COVID-19
Restructuring Cost and Reserve [Line Items]
Operating percentage of capacity		54.00%			54.00%
Embassy Suites, Hughes Landing | COVID-19
Restructuring Cost and Reserve [Line Items]
Operating percentage of capacity		100.00%			100.00%
Cumulative Effect, Period of Adoption, Adjustment
Restructuring Cost and Reserve [Line Items]
Retained earnings, decrease							(18,000)
Cumulative Effect, Period of Adoption, Adjustment | Accumulated Deficit
Restructuring Cost and Reserve [Line Items]
Retained earnings, decrease							$ (18,000)
SEC Schedule, 12-09, Allowance, Loan and Lease Loss | COVID-19
Restructuring Cost and Reserve [Line Items]
Provision for doubtful accounts		$ 5,700,000			$ 7,200,000
SEC Schedule, 12-09, Reserve, Legal | COVID-19
Restructuring Cost and Reserve [Line Items]
Provision for doubtful accounts		$ 3,000,000.0			$ 4,500,000
Number of hotels | hotel			3