SEGMENTS INFORMATION (Revenues from External Customers and Operating Profit Before Unallocated Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Operating profit	$ 72,882	$ 54,237	$ 137,540	$ 102,934
North America
Segment Reporting Information [Line Items]
Segment revenues	331,039	257,103	641,728	488,299
Operating profit	69,347	51,221	133,804	95,181
Europe
Segment Reporting Information [Line Items]
Segment revenues	197,452	171,495	391,675	344,838
Operating profit	27,679	26,568	59,464	55,458
Russia
Segment Reporting Information [Line Items]
Segment revenues	23,201	17,380	39,781	37,166
Operating profit	5,652	2,321	6,241	7,668
Operating Segments
Segment Reporting Information [Line Items]
Segment revenues	551,692	445,978	1,073,184	870,303
Operating profit	$ 102,678	$ 80,110	$ 199,509	$ 158,307