GOODWILL (Details) - USD ($) $ in Thousands			12 Months Ended
	Jul. 01, 2015	Jun. 01, 2015	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Goodwill, beginning balance			$ 1,138,805	$ 718,587
Acquisitions			115,347	421,724
Effect of foreign currency translation			(1,207)	(1,506)
Goodwill, ending balance			1,252,945	1,138,805
Apartment Finder [Member]
Goodwill [Roll Forward]
Acquisitions		$ 107,692
Goodwill, ending balance		$ 107,692
Belbex [Member]
Goodwill [Roll Forward]
Acquisitions	$ 2,400
Independent Distributor Buyout [Member]
Goodwill [Roll Forward]
Acquisitions			5,255
North America [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance			1,114,363	692,639
Acquisitions			112,947	421,724
Effect of foreign currency translation			0	0
Goodwill, ending balance			1,227,310	1,114,363
International [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance			24,442	25,948
Acquisitions			2,400	0
Effect of foreign currency translation			(1,207)	(1,506)
Goodwill, ending balance			$ 25,635	$ 24,442