BENEFIT PLANS (Details) - IAC Plan - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
United States
Defined Contribution Plan Disclosure
Employer contribution per dollar employee contributes up to contribution limit	100.00%
Employer contribution limit per calendar year (as a percent)	10.00%
Defined contribution plan contributions	$ 5.7	$ 6.7	$ 5.1
All Other Countries
Defined Contribution Plan Disclosure
Defined contribution plan contributions	$ 2.0	$ 2.3	$ 1.5

Amount of cost for defined contribution plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480794/715-70-50-1

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