CONSOLIDATED FINANCIAL STATEMENT DETAILS - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash paid (received) during the year for:
Interest expense—third-party	$ 21,450	$ 5,367	$ 10,290
Interest expense—related party	0	0	54
Income tax payments, including amounts paid to IAC for Angi Inc.'s share of IAC's consolidated tax liability	4,647	1,789	12,224
Income tax refunds, including amounts received from IAC for Angi Inc.’s share of IAC's consolidated tax liability	$ (587)	$ (3,506)	$ (957)