GOODWILL (Goodwill by Segment) (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended	12 Months Ended
	Apr. 30, 2022	Jun. 30, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Goodwill, beginning balance		$ 2,314,759	$ 2,321,015
Acquisitions, including measurement period adjustments			10,496
Effect of foreign currency translation		6,446	(16,752)
Goodwill, ending balance		2,321,205	2,314,759
North America
Goodwill [Roll Forward]
Goodwill, beginning balance		2,149,247	2,145,846
Acquisitions, including measurement period adjustments			3,401
Effect of foreign currency translation		0	0
Goodwill, ending balance		2,149,247	2,149,247
International
Goodwill [Roll Forward]
Goodwill, beginning balance		165,512	175,169
Acquisitions, including measurement period adjustments			7,095
Effect of foreign currency translation		6,446	(16,752)
Goodwill, ending balance		$ 171,958	165,512
Homes.com | North America
Goodwill [Roll Forward]
Goodwill, measuring period adjustment			3,400
Business Immo
Goodwill [Roll Forward]
Goodwill acquired	$ 7,100
Business Immo | International
Goodwill [Roll Forward]
Goodwill acquired			$ 7,100