COMMITMENTS AND CONTINGENCIES - Franchise and Management Agreements (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Franchise agreements
Commitments and contingencies
Fees related to the agreement	$ 11.5	$ 11.5
Management Agreements
Commitments and contingencies
Fees related to the agreement	$ 5.1	$ 5.4
Management Agreements | Maximum
Commitments and contingencies
Term of contract	5 years