CONSOLIDATED AND COMBINED STATEMENT OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Class A Common Stock	Total ANGI Homeservices Inc. Shareholders' Equity and Invested Capital	Redeemable Noncontrolling Interests	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Common Stock Class C Common Stock	Additional Paid-in Capital	(Accumulated Deficit) Retained Earnings	Invested Capital	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Noncontrolling Interests
Balance at beginning of period at Dec. 31, 2016	$ 162,613		$ 153,131	$ 13,781	$ 0	$ 0	$ 0	$ 0	$ 0	$ 154,852	$ (1,721)	$ 0	$ 9,482
Balance at the beginning of the period (shares) at Dec. 31, 2016					0	0	0
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	(103,136)		(103,118)	(1,391)					(121,764)	18,646			(18)
Other comprehensive income (loss)	4,210		3,953	758							3,953		257
Net increase in IAC’s investment in HomeAdvisor prior to the Combination	46,339		46,339							46,339
Contribution of IAC's HomeAdvisor business to ANGI Homeservices Inc. and Combination with Angie's List	779,471		779,471		$ 61	$ 415		997,107		(218,112)
Contribution of IAC's HomeAdvisor business to ANGI Homeservices Inc. and Combination with Angie's List (shares)					61,291	414,754
Stock-based compensation expense	125,451		125,451	2,017				125,451
Issuance of common stock pursuant to stock-based awards, net of withholding taxes	(8,490)		(8,490)		$ 2			(8,492)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)					1,527
Issuance of common stock to IAC pursuant to the employee matters agreement	0
Issuance of common stock to IAC pursuant to the employee matters agreement (shares)						432
Redeemable noncontrolling interests created in acquisitions	0			14,758
Purchase of noncontrolling interests				(11,991)
Purchase of noncontrolling interests	(848)												(848)
Adjustment of redeemable noncontrolling interests to fair value	(3,332)		(3,332)	3,332				(1,607)		(1,725)
Other	816		(59)	36				(59)					875
Balance at end of period at Dec. 31, 2017	1,003,094		993,346	21,300	$ 63	$ 415	$ 0	1,112,400	(121,764)	0	2,232	0	9,748
Balance at the end of the period (shares) at Dec. 31, 2017					62,818	415,186	0
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	77,653		77,318	(146)					77,318				335
Other comprehensive income (loss)	(4,277)		(4,093)	(582)							(4,093)		(184)
Stock-based compensation expense	95,940		95,940	1,138				95,940
Issuance of common stock pursuant to stock-based awards, net of withholding taxes	(25,091)		(25,091)		$ 9			(25,100)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)					9,111
Issuance of common stock to IAC pursuant to the employee matters agreement	0					$ 1		(1)
Issuance of common stock to IAC pursuant to the employee matters agreement (shares)						856
Issuance of common stock to IAC pursuant to the post-closing adjustment provision of the Angie's List merger agreement	0					$ 5		(5)
Issuance of common stock to IAC pursuant to the post-closing adjustment provision of the Angie's List merger agreement (shares)						5,076
Issuance of common stock to the equity holders of Handy Technologies, Inc. pursuant to the merger agreement	165,797		165,797		$ 9			165,788
Issuance of common stock to the equity holders of Handy Technologies, Inc. pursuant to the merger agreement (shares)					8,586
Distribution to IAC pursuant to the tax sharing agreement	(12,100)		(12,100)					(12,100)
Purchase of treasury stock		$ (57,900)
Purchase of noncontrolling interests				(4,825)
Purchase of noncontrolling interests	(1,236)												(1,236)
Adjustment of redeemable noncontrolling interests to fair value	(1,244)		(1,244)	1,244				(1,244)
Other	(2,198)		(2,581)	34				(2,581)					383
Balance at end of period at Dec. 31, 2018	1,321,987		1,312,941	18,163	$ 81	$ 421	$ 0	1,333,097	(18,797)	0	(1,861)	0	9,046
Balance at the end of the period (shares) at Dec. 31, 2018					80,515	421,118	0
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	35,172		34,829	142					34,829				343
Other comprehensive income (loss)	357		482	39							482		(125)
Stock-based compensation expense	65,815		65,815	148				65,815
Issuance of common stock pursuant to stock-based awards, net of withholding taxes	(32,957)		(32,957)		$ 6			(32,963)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)					6,492
Issuance of common stock to IAC pursuant to the employee matters agreement	(1,765)		(1,765)			$ 1		(1,766)
Issuance of common stock to IAC pursuant to the employee matters agreement (shares)						452
Purchase of treasury stock	(57,949)		(57,949)									(57,949)
Adjustments to Additional Paid in Capital, Tax Sharing Agreement	1,151		1,151					1,151
Purchase of noncontrolling interests				(71)
Adjustment of redeemable noncontrolling interests to fair value	(8,242)		(8,242)	8,242				(8,242)
Other	(17)		(17)	0				(17)
Balance at end of period at Dec. 31, 2019	$ 1,323,552		$ 1,314,288	$ 26,663	$ 87	$ 422	$ 0	$ 1,357,075	$ 16,032	$ 0	$ (1,379)	$ (57,949)	$ 9,264
Balance at the end of the period (shares) at Dec. 31, 2019					87,007	421,570	0