CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Former IAC	Match Group and ANGI Homeservices	Match Group	Redeemable Noncontrolling Interests	Total Match Group Shareholders’ Equity	Total Match Group Shareholders’ Equity Former IAC	Total Match Group Shareholders’ Equity Match Group and ANGI Homeservices	Total Match Group Shareholders’ Equity Match Group	Common Stock Common Stock $0.001 Par Value	Common Stock Common Stock $0.001 Par Value Match Group	Common Stock Former IAC Common Stock $0.001 Par Value	Common Stock Former IAC Common Stock $0.001 Par Value Former IAC	Common Stock Former IAC Class B Convertible Common Stock $0.001 Par Value	Additional Paid-in Capital	Additional Paid-in Capital Former IAC	Additional Paid-in Capital Match Group and ANGI Homeservices	Additional Paid-in Capital Match Group	Retained Deficit	Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) Income Match Group and ANGI Homeservices	Treasury Stock	Noncontrolling Interests	Noncontrolling Interests Match Group and ANGI Homeservices
Balance at beginning of period at Dec. 31, 2019					$ 44,527
Increase (Decrease) in Redeemable Noncontrolling Interests
Net (loss) earnings	$ 28,397				(1,462)
Other comprehensive income (loss), net of tax					99
Stock-based compensation expense					15
Purchase of redeemable noncontrolling interests					(3,165)
Adjustment of redeemable noncontrolling interests to fair value					2,418
Other					(1)
Balance at end of period at Mar. 31, 2020					42,431
Balance at beginning of period at Dec. 31, 2019	3,627,394					$ 2,657,118						$ 263		$ 16	$ 11,378,160				$ 1,724,640	$ (136,349)		$ (10,309,612)	$ 970,276
Balance at beginning of period (shares) at Dec. 31, 2019												263,230		16,157
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	(172,971)					(202,830)													(202,830)				29,859
Other comprehensive income (loss), net of tax	(26,204)					(21,339)														(21,339)			(4,865)
Stock-based compensation expense	56,085					11,499									11,499								44,586
Issuance of common stock pursuant to stock-based awards, net of withholding taxes		$ (20,515)					$ (20,515)						$ 1			$ (20,516)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)													272
Issuance of Former Match Group and ANGI Homeservices common stock pursuant to stock-based awards, net of withholding taxes			$ (148,604)					$ (139,162)									$ (139,565)				$ 403			$ (9,442)
Adjustment of redeemable noncontrolling interests to fair value	(2,418)					(2,418)									(2,418)
Purchase of Match Group and ANGI treasury stock	(120,658)					(120,658)									(120,658)
Other	1					1									1
Balance at end of period at Mar. 31, 2020	3,192,110					2,161,696						$ 264		$ 16	11,106,503				1,521,810	(157,285)		$ (10,309,612)	1,030,414
Balance at end of period (shares) at Mar. 31, 2020												263,502		16,157
Balance at beginning of period at Dec. 31, 2020	640				640
Increase (Decrease) in Redeemable Noncontrolling Interests
Net (loss) earnings	(402)				(410)
Adjustment of redeemable noncontrolling interests to fair value					810
Balance at end of period at Mar. 31, 2021	1,040				$ 1,040
Balance at beginning of period at Dec. 31, 2020	(1,414,042)					(1,415,084)				$ 267					7,089,007				(8,422,904)	(81,454)			1,042
Balance at beginning of period (shares) at Dec. 31, 2020										267,329
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	174,258					174,250													174,250				8
Other comprehensive income (loss), net of tax	(20,609)					(20,576)														(20,576)			(33)
Stock-based compensation expense	31,431					31,431									31,431
Issuance of common stock pursuant to stock-based awards, net of withholding taxes				$ 19,425					$ 19,425		$ 3							$ 19,422
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)											2,753
Adjustment of redeemable noncontrolling interests to fair value	(810)					(810)									(810)
Other	(3,227)					(3,227)									(3,227)
Balance at end of period at Mar. 31, 2021	$ (1,213,574)					$ (1,214,591)				$ 270					$ 7,135,823				$ (8,248,654)	$ (102,030)			$ 1,017
Balance at end of period (shares) at Mar. 31, 2021										270,082