BENEFIT PLANS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
HomeAdvisor
Defined Contribution Plan Disclosure
Employee contribution limit per calendar year (as a percent of pre-tax earnings)	50.00%
Employer contribution limit per calendar year (as a percent of compensation)	3.00%
HomeAdvisor | United States
Defined Contribution Plan Disclosure
Defined contribution plan contributions	$ 5.6	$ 3.5	$ 2.7
HomeAdvisor | All Other Countries
Defined Contribution Plan Disclosure
Defined contribution plan contributions	$ 0.4	0.3	$ 0.1
Angie's List
Defined Contribution Plan Disclosure
Employer contribution limit per calendar year (as a percent of compensation)	3.00%
Defined contribution plan contributions		$ 0.6