CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Match Group and ANGI Homeservices	Match Group	Former IAC	Redeemable Noncontrolling Interests	Total Match Group Shareholders’ Equity	Total Match Group Shareholders’ Equity Match Group and ANGI Homeservices	Total Match Group Shareholders’ Equity Match Group	Total Match Group Shareholders’ Equity Former IAC	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 Match Group and ANGI Homeservices	Additional Paid-in Capital Match Group	Additional Paid-in Capital Former IAC	Retained Earnings	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, 2018					$ 65,687
Increase (Decrease) in Redeemable Noncontrolling Interests
Net (loss) earnings	$ 88,842				4,625
Other comprehensive income, net of tax					(514)
Stock-based compensation expense					113
Stock-based compensation expense	179,639					$ 63,387									$ 63,387								$ 116,252
Purchase of redeemable noncontrolling interests					(6,192)
Adjustment of redeemable noncontrolling interests to fair value					8,607
Noncontrolling interests created in an acquisition					5,009
Other					(33)
Balance at end of period at Sep. 30, 2019					77,302
Balance at beginning of period at Dec. 31, 2018	3,551,801					2,843,125						$ 262		$ 16	12,022,387				$ 1,258,794	$ (128,722)		$ (10,309,612)	708,676
Balance at beginning of period (shares) at Dec. 31, 2018												262,303		16,157
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	414,923					330,706													330,706				84,217
Other comprehensive loss, net of tax	(20,138)					(16,303)														(16,303)			(3,835)
Stock-based compensation expense	179,639					63,387									63,387								116,252
Issuance of Former IAC common stock pursuant to stock-based awards, net of withholding taxes	(78,058)					(78,058)						$ 1			(78,059)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)												807
Issuance of Former Match Group and ANGI Homeservices common stock pursuant to stock-based awards, net of withholding taxes		$ (197,236)					$ (200,240)									$ (200,661)					$ 421			$ 3,004
Purchase of treasury stock	(220,636)					(220,636)									(220,636)
Adjustment of redeemable noncontrolling interests to fair value	(8,607)					(8,607)									(8,607)
Purchase of exchangeable note hedges	(303,428)					(303,428)									(303,428)
Equity component of exchangeable Senior Notes, net of deferred financing costs and deferred tax liabilities	320,998					320,998									320,998
Issuance of warrants	166,520					166,520									166,520
Other	(17)					(190)									(190)								173
Balance at end of period at Sep. 30, 2019	3,805,761					2,897,274						$ 263		$ 16	11,761,711				1,589,500	(144,604)		(10,309,612)	908,487
Balance at end of period (shares) at Sep. 30, 2019												263,110		16,157
Balance at beginning of period at Jun. 30, 2019					80,502
Increase (Decrease) in Redeemable Noncontrolling Interests
Net (loss) earnings	31,228				(1,270)
Other comprehensive income, net of tax					(365)
Stock-based compensation expense					36
Stock-based compensation expense	49,853					20,332									20,332								29,521
Purchase of redeemable noncontrolling interests					(71)
Adjustment of redeemable noncontrolling interests to fair value					(1,531)
Other					1
Balance at end of period at Sep. 30, 2019					77,302
Balance at beginning of period at Jun. 30, 2019	3,843,597					2,983,461						$ 263		$ 16	11,957,543				1,460,956	(125,705)		(10,309,612)	860,136
Balance at beginning of period (shares) at Jun. 30, 2019												262,789		16,157
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	161,042					128,544													128,544				32,498
Other comprehensive loss, net of tax	(22,688)					(18,389)														(18,389)			(4,299)
Stock-based compensation expense	49,853					20,332									20,332								29,521
Issuance of Former IAC common stock pursuant to stock-based awards, net of withholding taxes	(55,036)	(32,628)				(55,036)	(23,259)								(55,036)	(22,749)					(510)			(9,369)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)												321
Purchase of treasury stock	(139,779)					(139,779)									(139,779)
Adjustment of redeemable noncontrolling interests to fair value	1,531					1,531									1,531
Equity component of exchangeable Senior Notes, net of deferred financing costs and deferred tax liabilities	(130)					(130)									(130)
Other	(1)					(1)									(1)
Balance at end of period at Sep. 30, 2019	3,805,761					2,897,274						$ 263		$ 16	11,761,711				1,589,500	(144,604)		(10,309,612)	908,487
Balance at end of period (shares) at Sep. 30, 2019												263,110		16,157
Balance at beginning of period at Dec. 31, 2019	44,527				44,527
Increase (Decrease) in Redeemable Noncontrolling Interests
Net (loss) earnings	59,680				(2,687)
Other comprehensive income, net of tax					(686)
Stock-based compensation expense					15
Stock-based compensation expense	198,179					111,816									111,816								86,363
Purchase of redeemable noncontrolling interests					(3,165)
Adjustment of redeemable noncontrolling interests to fair value					7,820
Exchange Former IAC common stock and Class B common stock for Match Group common stock and completion of the Separation					(43,583)
Other					(1)
Balance at end of period at Sep. 30, 2020	2,240				2,240
Balance at beginning of period at Dec. 31, 2019	3,898,318					2,928,042				$ 0		$ 263		$ 16	11,683,799				1,689,925	(136,349)		(10,309,612)	970,276
Balance at beginning of period (shares) at Dec. 31, 2019										0		263,230		16,157
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	50,349					(12,018)													(12,018)				62,367
Other comprehensive loss, net of tax	13,431					13,829														13,829			(398)
Stock-based compensation expense	198,179					111,816									111,816								86,363
Issuance of Former IAC common stock pursuant to stock-based awards, net of withholding taxes			$ 83,225	$ (34,517)				$ 83,225	$ (34,517)		$ 5		$ 1				$ 83,220	$ (34,518)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)											4,803		453
Issuance of Former Match Group and ANGI Homeservices common stock pursuant to stock-based awards, net of withholding taxes		$ (223,047)					$ (211,642)									$ (212,270)					$ 628			$ (11,405)
Adjustment of redeemable noncontrolling interests to fair value	(7,820)					(7,820)									(7,820)
Purchase of treasury stock	(187,735)					(187,735)									(187,735)
Retirement of treasury stock												$ (184)		$ (10)	194				(10,309,612)			10,309,612
Retirement of treasury stock (shares)												(184,340)		(10,368)
Exchange Former IAC common stock and Class B common stock for Match Group common stock and completion of the Separation	(5,232,943)					(4,734,151)				$ 184		$ (80)		$ (6)	(4,748,030)					13,781			(498,792)
Exchange Former IAC common stock and Class B common stock for Match Group common stock and Separation (shares)										183,749		(79,343)		(5,789)
Acquire Former Match Group noncontrolling interest						608,168				$ 58					608,110								(608,168)
Acquire Former Match Group noncontrolling interest (shares)										57,868
Stock issued (shares)										17,339
Value of stock issued										$ 17					(17)
Other	(1)					(131)									(131)								130
Balance at end of period at Sep. 30, 2020	(1,442,561)					(1,442,934)				$ 264		$ 0		$ 0	7,296,618				(8,631,705)	(108,111)		0	373
Balance at end of period (shares) at Sep. 30, 2020										263,759		0		0
Balance at beginning of period at Jun. 30, 2020					(156)
Increase (Decrease) in Redeemable Noncontrolling Interests
Net (loss) earnings	(586)				(617)
Stock-based compensation expense	38,757					38,757									38,757
Adjustment of redeemable noncontrolling interests to fair value					3,013
Balance at end of period at Sep. 30, 2020	2,240				$ 2,240
Balance at beginning of period at Jun. 30, 2020	(1,707,838)					(1,708,175)				$ 242					7,180,181				(8,764,286)	(124,312)			337
Balance at beginning of period (shares) at Jun. 30, 2020										241,617
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	132,612					132,581													132,581				31
Other comprehensive loss, net of tax	16,206					16,201														16,201			5
Stock-based compensation expense	38,757					38,757									38,757
Issuance of Former IAC common stock pursuant to stock-based awards, net of withholding taxes	83,225					83,225				$ 5					83,220
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)										4,803
Adjustment of redeemable noncontrolling interests to fair value	(3,013)					(3,013)									(3,013)
Stock issued (shares)										17,339
Value of stock issued										$ 17					(17)
Other	(2,510)					(2,510)									(2,510)
Balance at end of period at Sep. 30, 2020	$ (1,442,561)					$ (1,442,934)				$ 264		$ 0		$ 0	$ 7,296,618				$ (8,631,705)	$ (108,111)		$ 0	$ 373
Balance at end of period (shares) at Sep. 30, 2020										263,759		0		0