REVENUE - International Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenue	$ 580,185	$ 612,953	$ 1,805,662	$ 1,918,139
Operating Segment
Disaggregation of Revenue [Line Items]
Revenue	643,880	650,164	1,999,258	2,027,292
Operating Segment | International
Disaggregation of Revenue [Line Items]
Revenue	51,407	48,458	140,107	132,022
Operating Segment | International | Wholesale sales to franchisees
Disaggregation of Revenue [Line Items]
Revenue	32,321	28,941	81,266	80,747
Operating Segment | International | Royalties and franchise fees
Disaggregation of Revenue [Line Items]
Revenue	7,150	6,509	20,347	19,360
Operating Segment | International | Other
Disaggregation of Revenue [Line Items]
Revenue	$ 11,936	$ 13,008	$ 38,494	$ 31,915