GOODWILL (Details) - USD ($) $ in Thousands				12 Months Ended
	May 03, 2016	Jul. 01, 2015	Jun. 01, 2015	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Goodwill, beginning balance				$ 1,252,945	$ 1,138,805
Acquisitions				6,400	115,347
Effect of foreign currency translation				(4,479)	(1,207)
Goodwill, ending balance				1,254,866	1,252,945
Apartment Finder [Member]
Goodwill [Roll Forward]
Acquisitions			$ 108,000
Goodwill, ending balance			$ 107,692
Belbex [Member]
Goodwill [Roll Forward]
Acquisitions		$ 2,000
Independent Distributor Buyout [Member]
Goodwill [Roll Forward]
Acquisitions				467	5,000
Thomas Daily [Member]
Goodwill [Roll Forward]
Acquisitions	$ 6,000
North America [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance				1,227,310	1,114,363
Acquisitions				467	112,947
Effect of foreign currency translation				0	0
Goodwill, ending balance				1,227,777	1,227,310
International [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance				25,635	24,442
Acquisitions				5,933	2,400
Effect of foreign currency translation				(4,479)	(1,207)
Goodwill, ending balance				$ 27,089	$ 25,635