CONSOLIDATED AND COMBINED STATEMENT OF COMPREHENSIVE OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net (loss) earnings	$ (104,527)	$ 10,631	$ (3,996)
Other comprehensive income (loss):
Change in foreign currency translation adjustment	4,968	(657)	(581)
Total other comprehensive income (loss)	4,968	(657)	(581)
Comprehensive (loss) income	(99,559)	9,974	(4,577)
Components of comprehensive loss attributable to noncontrolling interests:
Net loss attributable to noncontrolling interests	1,409	2,497	2,671
Change in foreign currency translation adjustment attributable to noncontrolling interests	(1,015)	0	0
Comprehensive loss attributable to noncontrolling interests	394	2,497	2,671
Comprehensive (loss) income attributable to ANGI Homeservices Inc. shareholders	$ (99,165)	$ 12,471	$ (1,906)